-81.54% is the change from 455 to 84
Calculation steps:
[( 84 - 455 ) ÷ 455] x 100 = -81.54%
Formula
Percentage change = [(84 - 455) / 455] x 100
Subtract the new number by the original number
84 - 455 = -371
-371 ÷ 455 = -0.8153846153846154
-0.8153846153846154 x 100 = -81.54%