Resistances Question

[eisendwat]

Hypothetical Scenario:

I have -100 to enemy cold resistance.
My enemy has 75 cold resistance (CAPPED) and has equipped an item with 25 cold resist.

What is my enemies actual resistance?

I am guessing it's -25 cold resistance but I'm not sure. It seems like it could even out at 0 cold resist too.

Does anyone know how the calculations work?

[japanzaman]

Are you asking if resists stack or not?

If so, yes, they do and your enemy will be at 0 CR. Although 75 is the max EFFECTIVE elemental resist (unless you have +to max resist), the total is unaffected. You cannot have lower than -100 resist, but I don't believe there is a limit to how high you can stack.

+Add up all resist bonuses from items, skills, auras, Anya scrolls...
-Subtract all penalties (difficulty penalty for nightmare/hell, auras, abilities, etc)
=75(or whatever the max is) or the result, whichever is lower.