-81.17% is the change from 871 to 164
Calculation steps:
[( 164 - 871 ) ÷ 871] x 100 = -81.17%
Formula
Percentage change = [(164 - 871) / 871] x 100
Subtract the new number by the original number
164 - 871 = -707
-707 ÷ 871 = -0.8117106773823192
-0.8117106773823192 x 100 = -81.17%