-82.49% is the change from 571 to 100
Calculation steps:
[( 100 - 571 ) ÷ 571] x 100 = -82.49%
Formula
Percentage change = [(100 - 571) / 571] x 100
Subtract the new number by the original number
100 - 571 = -471
-471 ÷ 571 = -0.8248686514886164
-0.8248686514886164 x 100 = -82.49%