-15.26% is the change from 839 to 711
Calculation steps:
[( 711 - 839 ) ÷ 839] x 100 = -15.26%
Formula
Percentage change = [(711 - 839) / 839] x 100
Subtract the new number by the original number
711 - 839 = -128
-128 ÷ 839 = -0.15256257449344457
-0.15256257449344457 x 100 = -15.26%