-90.48% is the change from 861 to 82
Calculation steps:
[( 82 - 861 ) ÷ 861] x 100 = -90.48%
Formula
Percentage change = [(82 - 861) / 861] x 100
Subtract the new number by the original number
82 - 861 = -779
-779 ÷ 861 = -0.9047619047619048
-0.9047619047619048 x 100 = -90.48%