-81.29% is the change from 871 to 163
Calculation steps:
[( 163 - 871 ) ÷ 871] x 100 = -81.29%
Formula
Percentage change = [(163 - 871) / 871] x 100
Subtract the new number by the original number
163 - 871 = -708
-708 ÷ 871 = -0.8128587830080367
-0.8128587830080367 x 100 = -81.29%