-78.23% is the change from 418 to 91
Calculation steps:
[( 91 - 418 ) ÷ 418] x 100 = -78.23%
Formula
Percentage change = [(91 - 418) / 418] x 100
Subtract the new number by the original number
91 - 418 = -327
-327 ÷ 418 = -0.7822966507177034
-0.7822966507177034 x 100 = -78.23%