For Your perusal

[horus418]

Partial mitigation will no longer add to regular mitigation. Instead it will be multiplicative. 100 damage 60% mitigation + 50% partial mitigation = 100*(1-.6)*(1-.5) = 20 damage.

The reason behind this change is to prevent players from becoming immune to monsters with the increased mitigation and BPE rates available in Isengard.

The reason this isn't in the patch notes is that it would cause more confusion than clarification. Many players assume that is the way it always worked. Only those really into the math knew that partial mitigation was additive. I felt that a forum post in the Guardian or Warden forum would get out the knowledge for those who are interested.

asdfdassda