Yep. Turns out it does! I happened to do it differently to how Midlumer did it but it still matched.
This is what it matches:
This however is different to the negative resists -% or the 1+1.9= ×1.9 with 90% weaken example.
These formulas you will see below are the averages and the damage based upon chance rather than the actual damage on the actual enemy. Probability basically helped. This is basically his estimated average DMG based on the probability but it’s not the exact damage as 1+1.9 from 90% weaken.
1+1.9 from 90% weaken in Midlumer guide is the same as 0-90%= -90% resist as I’ve discovered and my actual damage difference.