Originally Posted by fred321
How does armor and magic resist work when negative?
According to the formula on the 1st post, damage should be really big when these get near -100, and shouldn't be able to get past it, but I tried with Soraka and got golem's magic resist to -190, and still it only took "-66% reduced damage".
And with 200 Armor, you get 66% damage reduction.
Notice the connection here; the values are the same in either direction.
More in detail.
What is actually happening.
This is how you calculate the reduction above 0.
Below 0, the calculation is 2 - (100/(100-Armor))
This is also true for MR
Now, it's accurate to say that each point of armor you have is a 1% increase to your total lifespan against that type of damage (when you have 100 armor, you have a 50% damage reduction, because it's "doubling" your life. At 200 armor, it's a 66% reduction, or 300% life, etc).
I'm not sure the correct turn of phrase for a similar effect for negatives (as saying "it counts as a 1% decrease to your life" doesn't really make sense past 100 shred)