-79.67% is the change from 418 to 85
Calculation steps:
[( 85 - 418 ) ÷ 418] x 100 = -79.67%
Formula
Percentage change = [(85 - 418) / 418] x 100
Subtract the new number by the original number
85 - 418 = -333
-333 ÷ 418 = -0.7966507177033493
-0.7966507177033493 x 100 = -79.67%