-85.44% is the change from 577 to 84
Calculation steps:
[( 84 - 577 ) ÷ 577] x 100 = -85.44%
Formula
Percentage change = [(84 - 577) / 577] x 100
Subtract the new number by the original number
84 - 577 = -493
-493 ÷ 577 = -0.854419410745234
-0.854419410745234 x 100 = -85.44%