VAT setup

Dear Experts, I need your help of VAT setup,

The system now calculation the VAT wrongly, but a few days ago it was calculation fine, this is the example screenshots from Payment Journal.

The VAT rate is 5%

This is the correct calculation Amount 243.60 * 5% the VAT amount is 12.18

Now I am doing exactly the same entry with the same amount but the system did this formula  Amount ÷ 1.05 * 5%


232 * 5% VAT = 11.60

This is the screenshot