-88.61% is the change from 711 to 81
Calculation steps:
[( 81 - 711 ) ÷ 711] x 100 = -88.61%
Formula
Percentage change = [(81 - 711) / 711] x 100
Subtract the new number by the original number
81 - 711 = -630
-630 ÷ 711 = -0.8860759493670886
-0.8860759493670886 x 100 = -88.61%