-81.4% is the change from 871 to 162
Calculation steps:
[( 162 - 871 ) ÷ 871] x 100 = -81.4%
Formula
Percentage change = [(162 - 871) / 871] x 100
Subtract the new number by the original number
162 - 871 = -709
-709 ÷ 871 = -0.8140068886337543
-0.8140068886337543 x 100 = -81.4%