How to derive the profit calculation formula?

Question

Mathematics

Hello, I'm trying to derive a formula for calculating profit, since on the same site.
The site places a bet on a certain percentage of victory, more risk - more profit and a commission is also taken away from the bet, like 0.01%, as I understand it, this is not accurate.
Cases:
bet => 100
win percentage => 100
profit => -0.1
bet => 100
win percentage => 95
profit => 5.1578
bet => 100
win percentage => 90
profit => 11
bet => 100
win percentage => 50
profit => 99.8
bet => 100
win percentage => 15
profit => 566
bet => 100
win percentage => 5
profit =>
win percentage => 1
profit => 9890
I don’t quite understand what affects the result, because the formulas that I deduced fit only 1 case.

Answer 1

something like this:
profit = rate * (( 100% / win% ) - 1) * ( 100% - commission% )
and the commission here is like 0.1%
Check, I'm too lazy to check all cases.
Upd. with the commission is not entirely obvious :) It seems that the commission is taken as a percentage of the winnings, but if the winnings are zero, then the commission is taken as a percentage of the bet.