-83.01% is the change from 571 to 97
Calculation steps:
[( 97 - 571 ) ÷ 571] x 100 = -83.01%
Formula
Percentage change = [(97 - 571) / 571] x 100
Subtract the new number by the original number
97 - 571 = -474
-474 ÷ 571 = -0.830122591943958
-0.830122591943958 x 100 = -83.01%