-81.28% is the change from 454 to 85
Calculation steps:
[( 85 - 454 ) ÷ 454] x 100 = -81.28%
Formula
Percentage change = [(85 - 454) / 454] x 100
Subtract the new number by the original number
85 - 454 = -369
-369 ÷ 454 = -0.8127753303964758
-0.8127753303964758 x 100 = -81.28%