Namahage’s special reports that he gains 45% more attack, but is that 45% in his special or base attack? ex: special 290% + 45% = 335% or 526 + 45% = 762.
It’s his attack stat.
You can press & hold in battle on the heroes. This then brings up their stats at that point in time.
Namahage under his buff will have a green +xyz above his normal attack stat.