-86.34% is the change from 571 to 78
Calculation steps:
[( 78 - 571 ) ÷ 571] x 100 = -86.34%
Formula
Percentage change = [(78 - 571) / 571] x 100
Subtract the new number by the original number
78 - 571 = -493
-493 ÷ 571 = -0.8633975481611208
-0.8633975481611208 x 100 = -86.34%