-86.62% is the change from 613 to 82
Calculation steps:
[( 82 - 613 ) ÷ 613] x 100 = -86.62%
Formula
Percentage change = [(82 - 613) / 613] x 100
Subtract the new number by the original number
82 - 613 = -531
-531 ÷ 613 = -0.866231647634584
-0.866231647634584 x 100 = -86.62%