-11.13% is the change from 800 to 711
Calculation steps:
[( 711 - 800 ) ÷ 800] x 100 = -11.13%
Formula
Percentage change = [(711 - 800) / 800] x 100
Subtract the new number by the original number
711 - 800 = -89
-89 ÷ 800 = -0.11125
-0.11125 x 100 = -11.13%