Damage Mitigation
From EHWiki
This page is dedicated to explaining the mechanics of the ways players in the HentaiVerse mini-game reduce damage. It is not intended as a guide to reducing damage though a better understanding of the mechanics can allow a player to make more informed decisions.
Damage Reduction: There are three factors that go into determining damage reduction: Physical/Magical Absorption (including that granted by Shield or Barrier), Physical/Magical Mitigation, and specific type Mitigation (e.g. Slashing, Fire, etc.). It is important to note that mitigations are applied in a multiplicative fashion.
This works out to:
[(Original Damage Roll- Absorption)*(1-Mitigation)*(1-Mitigation)]= Damage taken.