-17.9% is the change from 866 to 711
Calculation steps:
[( 711 - 866 ) ÷ 866] x 100 = -17.9%
Formula
Percentage change = [(711 - 866) / 866] x 100
Subtract the new number by the original number
711 - 866 = -155
-155 ÷ 866 = -0.1789838337182448
-0.1789838337182448 x 100 = -17.9%