diff --git a/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/util/chart/TimelineChart.java b/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/util/chart/TimelineChart.java
index 273280fbcf..335cb9be62 100644
--- a/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/util/chart/TimelineChart.java
+++ b/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/util/chart/TimelineChart.java
@@ -1,6 +1,5 @@
 package name.abuchen.portfolio.ui.util.chart;
 
-import java.text.DecimalFormat;
 import java.time.LocalDate;
 import java.time.temporal.ChronoUnit;
 import java.util.ArrayList;
@@ -31,6 +30,7 @@
 
 import name.abuchen.portfolio.ui.UIConstants;
 import name.abuchen.portfolio.ui.util.Colors;
+import name.abuchen.portfolio.ui.util.format.PercentNumberFormat;
 
 public class TimelineChart extends Chart // NOSONAR
 {
@@ -120,7 +120,7 @@ public TimelineChart(Composite parent)
         IAxis y3Axis = getAxisSet().getYAxis(axisId3rd);
         y3Axis.getTitle().setVisible(false);
         y3Axis.getTick().setVisible(false);
-        y3Axis.getTick().setFormat(new DecimalFormat("+#.##%;-#.##%")); //$NON-NLS-1$
+        y3Axis.getTick().setFormat(new PercentNumberFormat("+#.##%;-#.##%")); //$NON-NLS-1$
         y3Axis.getGrid().setStyle(LineStyle.NONE);
         y3Axis.setPosition(Position.Primary);
 
diff --git a/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/util/format/PercentNumberFormat.java b/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/util/format/PercentNumberFormat.java
new file mode 100644
index 0000000000..6004fbec15
--- /dev/null
+++ b/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/util/format/PercentNumberFormat.java
@@ -0,0 +1,35 @@
+package name.abuchen.portfolio.ui.util.format;
+
+import java.text.DecimalFormat;
+import java.text.FieldPosition;
+import java.text.Format;
+import java.text.ParsePosition;
+
+public class PercentNumberFormat extends Format
+{
+    private String decimalFormat;
+    private static final long serialVersionUID = 1L;
+
+    public PercentNumberFormat(String decimalFormat)
+    {
+        this.decimalFormat = decimalFormat;
+    }
+
+    @Override
+    public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos)
+    {
+        if (!(obj instanceof Number))
+            throw new IllegalArgumentException("object must be a subclass of Number"); //$NON-NLS-1$
+
+        toAppendTo.append(new DecimalFormat(decimalFormat).format(((Number) obj).doubleValue()));
+
+        return toAppendTo;
+    }
+
+    @Override
+    public Object parseObject(String source, ParsePosition pos)
+    {
+        pos.setErrorIndex(0);
+        return null;
+    }
+}
diff --git a/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/views/PerformanceChartView.java b/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/views/PerformanceChartView.java
index 7f068ee738..abb6ce6691 100644
--- a/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/views/PerformanceChartView.java
+++ b/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/views/PerformanceChartView.java
@@ -39,6 +39,7 @@
 import name.abuchen.portfolio.ui.util.SimpleAction;
 import name.abuchen.portfolio.ui.util.chart.TimelineChart;
 import name.abuchen.portfolio.ui.util.chart.TimelineChartCSVExporter;
+import name.abuchen.portfolio.ui.util.format.PercentNumberFormat;
 import name.abuchen.portfolio.ui.views.dataseries.DataSeries;
 import name.abuchen.portfolio.ui.views.dataseries.DataSeriesCache;
 import name.abuchen.portfolio.ui.views.dataseries.DataSeriesChartLegend;
@@ -114,7 +115,7 @@ protected Composite createBody(Composite parent)
         chart = new TimelineChart(composite);
         chart.getTitle().setText(getTitle());
         chart.getTitle().setVisible(false);
-        chart.getAxisSet().getYAxis(0).getTick().setFormat(new DecimalFormat("0.#%")); //$NON-NLS-1$
+        chart.getAxisSet().getYAxis(0).getTick().setFormat(new PercentNumberFormat("0.#%")); //$NON-NLS-1$
         chart.getToolTip().setDefaultValueFormat(new DecimalFormat(Values.Percent2.pattern()));
         chart.getToolTip().reverseLabels(true);
 
diff --git a/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/views/ReturnsVolatilityChartView.java b/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/views/ReturnsVolatilityChartView.java
index 80b305fa0b..0be5ac3c87 100644
--- a/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/views/ReturnsVolatilityChartView.java
+++ b/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/views/ReturnsVolatilityChartView.java
@@ -39,6 +39,7 @@
 import name.abuchen.portfolio.ui.util.SimpleAction;
 import name.abuchen.portfolio.ui.util.chart.ScatterChart;
 import name.abuchen.portfolio.ui.util.chart.ScatterChartCSVExporter;
+import name.abuchen.portfolio.ui.util.format.PercentNumberFormat;
 import name.abuchen.portfolio.ui.views.dataseries.DataSeries;
 import name.abuchen.portfolio.ui.views.dataseries.DataSeriesCache;
 import name.abuchen.portfolio.ui.views.dataseries.DataSeriesChartLegend;
@@ -192,11 +193,11 @@ protected Composite createBody(Composite parent)
 
         IAxis xAxis = chart.getAxisSet().getXAxis(0);
         xAxis.getTitle().setText(this.riskMetric.toString());
-        xAxis.getTick().setFormat(new DecimalFormat("0.##%")); //$NON-NLS-1$
+        xAxis.getTick().setFormat(new PercentNumberFormat("0.##%")); //$NON-NLS-1$
 
         IAxis yAxis = chart.getAxisSet().getYAxis(0);
         yAxis.getTitle().setText(useIRR ? Messages.LabelPerformanceIRR : Messages.LabelPerformanceTTWROR);
-        yAxis.getTick().setFormat(new DecimalFormat("0.##%")); //$NON-NLS-1$
+        yAxis.getTick().setFormat(new PercentNumberFormat("0.##%")); //$NON-NLS-1$
 
         configurator = new DataSeriesConfigurator(this, DataSeries.UseCase.RETURN_VOLATILITY);
         configurator.addListener(this::updateChart);
diff --git a/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/views/dashboard/ChartWidget.java b/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/views/dashboard/ChartWidget.java
index c3cdcd3200..1c8ebf7d38 100644
--- a/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/views/dashboard/ChartWidget.java
+++ b/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/views/dashboard/ChartWidget.java
@@ -34,6 +34,7 @@
 import name.abuchen.portfolio.ui.util.SimpleAction;
 import name.abuchen.portfolio.ui.util.chart.TimelineChart;
 import name.abuchen.portfolio.ui.util.format.AmountNumberFormat;
+import name.abuchen.portfolio.ui.util.format.PercentNumberFormat;
 import name.abuchen.portfolio.ui.util.format.ThousandsNumberFormat;
 import name.abuchen.portfolio.ui.views.ChartViewConfig;
 import name.abuchen.portfolio.ui.views.PerformanceChartView;
@@ -295,7 +296,7 @@ public void update(Object object)
             if (useCase == DataSeries.UseCase.STATEMENT_OF_ASSETS)
                 chart.getAxisSet().getYAxis(0).getTick().setFormat(new ThousandsNumberFormat());
             else
-                chart.getAxisSet().getYAxis(0).getTick().setFormat(new DecimalFormat("0.#%")); //$NON-NLS-1$
+                chart.getAxisSet().getYAxis(0).getTick().setFormat(new PercentNumberFormat("0.#%")); //$NON-NLS-1$
 
             chart.getAxisSet().getYAxis(0).getTick().setVisible(get(ChartShowYAxisConfig.class).getIsShowYAxis());
 
diff --git a/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/views/dashboard/charts/DrawdownChartWidget.java b/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/views/dashboard/charts/DrawdownChartWidget.java
index 4b41dbab91..b586d1b334 100644
--- a/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/views/dashboard/charts/DrawdownChartWidget.java
+++ b/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/views/dashboard/charts/DrawdownChartWidget.java
@@ -17,6 +17,7 @@
 import name.abuchen.portfolio.snapshot.PerformanceIndex;
 import name.abuchen.portfolio.ui.Messages;
 import name.abuchen.portfolio.ui.util.chart.TimelineChart;
+import name.abuchen.portfolio.ui.util.format.PercentNumberFormat;
 import name.abuchen.portfolio.ui.views.dashboard.ChartHeightConfig;
 import name.abuchen.portfolio.ui.views.dashboard.ChartShowYAxisConfig;
 import name.abuchen.portfolio.ui.views.dashboard.DashboardData;
@@ -111,7 +112,7 @@ public void update(Object object)
             for (var s : chart.getSeriesSet().getSeries())
                 chart.getSeriesSet().deleteSeries(s.getId());
 
-            chart.getAxisSet().getYAxis(0).getTick().setFormat(new DecimalFormat("0.#%")); //$NON-NLS-1$
+            chart.getAxisSet().getYAxis(0).getTick().setFormat(new PercentNumberFormat("0.#%")); //$NON-NLS-1$
             chart.getAxisSet().getYAxis(0).getTick().setVisible(get(ChartShowYAxisConfig.class).getIsShowYAxis());
 
             Interval reportingPeriod = get(ReportingPeriodConfig.class).getReportingPeriod()
diff --git a/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/views/taxonomy/StackedChartViewer.java b/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/views/taxonomy/StackedChartViewer.java
index a70d8a902a..6f6ad8dc97 100644
--- a/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/views/taxonomy/StackedChartViewer.java
+++ b/name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/views/taxonomy/StackedChartViewer.java
@@ -8,6 +8,7 @@
 
 import name.abuchen.portfolio.ui.editor.PortfolioPart;
 import name.abuchen.portfolio.ui.util.chart.StackedTimelineChart;
+import name.abuchen.portfolio.ui.util.format.PercentNumberFormat;
 
 public class StackedChartViewer extends AbstractStackedChartViewer
 {
@@ -20,7 +21,7 @@ public StackedChartViewer(PortfolioPart part, TaxonomyModel model, TaxonomyNodeR
     @Override
     protected void configureChart(StackedTimelineChart chart)
     {
-        chart.getAxisSet().getYAxis(0).getTick().setFormat(new DecimalFormat("#0.0%")); //$NON-NLS-1$
+        chart.getAxisSet().getYAxis(0).getTick().setFormat(new PercentNumberFormat("#0.0%")); //$NON-NLS-1$
         chart.getToolTip().setDefaultValueFormat(new DecimalFormat("#0.0%")); //$NON-NLS-1$
     }