-88.79% is the change from 571 to 64
Calculation steps:
[( 64 - 571 ) ÷ 571] x 100 = -88.79%
Formula
Percentage change = [(64 - 571) / 571] x 100
Subtract the new number by the original number
64 - 571 = -507
-507 ÷ 571 = -0.8879159369527145
-0.8879159369527145 x 100 = -88.79%