-81.97% is the change from 865 to 156
Calculation steps:
[( 156 - 865 ) ÷ 865] x 100 = -81.97%
Formula
Percentage change = [(156 - 865) / 865] x 100
Subtract the new number by the original number
156 - 865 = -709
-709 ÷ 865 = -0.8196531791907514
-0.8196531791907514 x 100 = -81.97%