-85.29% is the change from 578 to 85
Calculation steps:
[( 85 - 578 ) ÷ 578] x 100 = -85.29%
Formula
Percentage change = [(85 - 578) / 578] x 100
Subtract the new number by the original number
85 - 578 = -493
-493 ÷ 578 = -0.8529411764705882
-0.8529411764705882 x 100 = -85.29%