-87.89% is the change from 710 to 86
Calculation steps:
[( 86 - 710 ) ÷ 710] x 100 = -87.89%
Formula
Percentage change = [(86 - 710) / 710] x 100
Subtract the new number by the original number
86 - 710 = -624
-624 ÷ 710 = -0.8788732394366198
-0.8788732394366198 x 100 = -87.89%