sorry, i wrote them without explainin what i was doing… i try to explain, but it’s self learnt playnig poker and english isn’t my main language so… be patient
the fist debuff (i.e. falcon) is a -54%.
So aplly a -54% means multiply a number for 0.54
We are looking for the defense after buff, so the 100% of defense AFTER the 54% debuff.
With a single debuff you can simply write 100-54, but it doesn’t work combinated with more debuff.
The most complete way to do it is 100*((100-54)/100)
That allows you to add more debuff to your formula
In this way we can calculate more than one debuff correctly