-90.37% is the change from 862 to 83
Calculation steps:
[( 83 - 862 ) ÷ 862] x 100 = -90.37%
Formula
Percentage change = [(83 - 862) / 862] x 100
Subtract the new number by the original number
83 - 862 = -779
-779 ÷ 862 = -0.9037122969837587
-0.9037122969837587 x 100 = -90.37%