How does this game calculate % more?

Kaurie

For example, on Impale it says that it does 300% more damage on enemies below 25%.

Does this mean it the damage is 300% of the original, or an increase of 300% (i.e. 300% vs 100% + 300%=400%)

Syrpynt

In this case, I'd take it at face value: (100% + 300%) * (BaseTooltipValue)


As far as I know, for most other calculations such as bonuses to spell/weapon power, it's more like:

BaseSpellPower * ((100+ (x% + x% + x%))/100)


So they don't stack, otherwise it would be:

(((BaseSpellPower * ((100 + x%)/100)) * ((100 + x%)/100)) * ((100 + x%)/100))