-86.32% is the change from 570 to 78
Calculation steps:
[( 78 - 570 ) ÷ 570] x 100 = -86.32%
Formula
Percentage change = [(78 - 570) / 570] x 100
Subtract the new number by the original number
78 - 570 = -492
-492 ÷ 570 = -0.8631578947368421
-0.8631578947368421 x 100 = -86.32%