As I said, the amounts are calculated by TT and you can''t change them. The amount is the first box is based on one of the four choices you selected. The 100% (110%) of 2024 total taxes is exactly that. I don't know enough about the other 3 boxes, I assume TT will use the 2025 tax table to calculate the 90%, 100% and 66-2/3%.
2025 Tax Brackets and Federal Income Tax Rates | Tax Foundation
TT assumes your 2025 withholding to be exactly the same as 2024.
The TT worksheet works for me, I just tested it.
