-88.59% is the change from 710 to 81
Calculation steps:
[( 81 - 710 ) ÷ 710] x 100 = -88.59%
Formula
Percentage change = [(81 - 710) / 710] x 100
Subtract the new number by the original number
81 - 710 = -629
-629 ÷ 710 = -0.8859154929577465
-0.8859154929577465 x 100 = -88.59%