Product Detail Page - Tier price (fixed & discount) save percentage displaying wrong calculation

[srsathish92]

Tier price (fixed & discount) save percentage displaying wrong calculation in product detail page.

Preconditions (*)

1. Magento 2.4-develop

Steps to reproduce (*)

1. Create simple product with
   Price - $100.00
   Special price - $65.00
2. Add tier price rule
   For 2 (Qty) - Fixed $40.00
   For 3 (Qty) - Percentage 36%
3. Save the product.

Expected result (*)

Both fixed and discount save percentage should be applied on final price

• Buy 2 for $40.00 each and save 38%
• Buy 3 for $64.00 each and save 2%

Actual result (*)

Fixed price save percentage applied on final price (In our case special price) and Discount save percentage applied on base price.

• Buy 2 for $40.00 each and save 38%
• Buy 3 for $64.00 each and save 36%

[m2-assistant]

Hi @srsathish92. Thank you for your report.
To help us process this issue please make sure that you provided the following information:

• Summary of the issue
• Information on your environment
• Steps to reproduce
• Expected and actual results

Please make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, please, add a comment to the issue:

@magento give me 2.4-develop instance - upcoming 2.4.x release

For more details, please, review the Magento Contributor Assistant documentation.

@srsathish92 do you confirm that you were able to reproduce the issue on vanilla Magento instance following steps to reproduce?

• yes
• no

---

• Join Magento Community Engineering Slack and ask your questions in #github channel.

[m2-assistant]

Hi @krishprakash. Thank you for working on this issue.
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[krishprakash]

@magento give me 2.4-develop instance

[magento-engcom-team]

Hi @krishprakash. Thank you for your request. I'm working on Magento 2.4-develop instance for you

[magento-engcom-team]

Hi @krishprakash, here is your Magento instance.
Admin access: https://i-26583-2-4-develop.instances.magento-community.engineering/admin_9af1
Login: 02b8101b Password: b06c0c655279
Instance will be terminated in up to 3 hours.

[magento-engcom-team]

✅ Confirmed by @krishprakash
Thank you for verifying the issue. Based on the provided information internal tickets MC-30912 were created

Issue Available: @krishprakash, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.

[ihor-sviziev]

@magento give me 2.4-develop instance

[magento-engcom-team]

Hi @ihor-sviziev. Thank you for your request. I'm working on Magento 2.4-develop instance for you

[magento-engcom-team]

Hi @ihor-sviziev, here is your Magento instance.
Admin access: https://i-26583-2-4-develop.instances.magento-community.engineering/admin_2fac
Login: 26678bd9 Password: 08ff719378b5
Instance will be terminated in up to 3 hours.

[ihor-sviziev]

We had discussion with @Nazar65 about fixing this issue.

There were two options:

1. Fix the calculated percentage on the product page on top of existing behavior in the admin + document it

2. Change calculation of tier prices to be working with special prices.

During discussion we found that 2nd option will affect too many magento installations that working with tier prices, so decided to go with 1st option.

What was done:

1. Created fix for calculated percentage on the product page - #26583 Tier pricing save percent showing logic updated in product detail page #26584
2. Created adjustment for documentation that tier prices doesn't work with special prices - Tier prices - Add note to clarify discount calculation merchdocs#338

Both changes still not merged, but I believe they'll be merged soon

[magento-engcom-team]

Hi @srsathish92. Thank you for your report.
The issue has been fixed in #26584 by @srsathish92 in 2.4-develop branch
Related commit(s):

• 9c11369cea37527da27c63108b8e18fa3b56ee9d
• 00317ef8f28a89c2ad7e5bf23d47beca8d9534ac
• ecc4ef5c9f60c416ce45fc1ea10071fd30336fe8
• 24b3fba8e2506f74cbd10bd8b9ae187c6ff8b062
• 62f8c6c16fc116b1683ec14db311e2a9fdc0fa03
• 01104963df3d0eb91bac08194dded8070e564158
• 4680f700a448c9eb2bf2172b349c95b3b5c8a4ae
• 0216e5e80f0004f05db2a7f4ad39e86801cdf85b

The fix will be available with the upcoming 2.4.0 release.