-18.37% is the change from 871 to 711
Calculation steps:
[( 711 - 871 ) ÷ 871] x 100 = -18.37%
Formula
Percentage change = [(711 - 871) / 871] x 100
Subtract the new number by the original number
711 - 871 = -160
-160 ÷ 871 = -0.18369690011481057
-0.18369690011481057 x 100 = -18.37%