How does Knock Off work on a Pokemon that is holding an Eviolite?

Question

Or rather, how will the damage be calculated?
Will the damage done be calculated by the target's Defense with or without the x1.5 boost from Eviolite?

Answer 1

The damage will be calculated with the 1.5 boost from Eviolite.
This is because Knock Off first deals damage, and then removes the item.

Hope I helped!