Clarification on Special Attack %

I just used Richard for the first time along with Sonya. I have Richards special attack percentage up to 405%, where Sonya’s is maxed at 345%. For some reason Sonya destroyed an opponent and Richard’s special barely did any damage. What am I missing?

You have to look at the attack stat and troop as well not just the percentage.


At their current levels, Sonya’s attack stat is at 471 and Richard’s is at 435. For simplification purposes, with both using zero troops, is there a formula to follow that would state the actual attack damage?

Here it is the analys, damage tiles, special skill.