-80.48% is the change from 871 to 170
Calculation steps:
[( 170 - 871 ) ÷ 871] x 100 = -80.48%
Formula
Percentage change = [(170 - 871) / 871] x 100
Subtract the new number by the original number
170 - 871 = -701
-701 ÷ 871 = -0.8048220436280138
-0.8048220436280138 x 100 = -80.48%