-86.58% is the change from 611 to 82
Calculation steps:
[( 82 - 611 ) ÷ 611] x 100 = -86.58%
Formula
Percentage change = [(82 - 611) / 611] x 100
Subtract the new number by the original number
82 - 611 = -529
-529 ÷ 611 = -0.8657937806873978
-0.8657937806873978 x 100 = -86.58%