I found that if you want to find the percentages values for the buffs in game (such as stunt chance or thoughness) you need to use this exponential formula:
Float Value= log(base=256,num=(8192/25)*PERCENTAGE)
So just place the percentage the game displays, and it will return the favor value you need to find.
I recommend using "range" scan by using ~ for the search.
So if the Float you get is 1.3256389 search "1.31~1.33" in the box of Game Guardian. And then change the value (preferably to 0 as that narrows the list down a lot)
Hope it helps someone