-85.64% is the change from 571 to 82
Calculation steps:
[( 82 - 571 ) ÷ 571] x 100 = -85.64%
Formula
Percentage change = [(82 - 571) / 571] x 100
Subtract the new number by the original number
82 - 571 = -489
-489 ÷ 571 = -0.8563922942206655
-0.8563922942206655 x 100 = -85.64%