-88.07% is the change from 721 to 86
Calculation steps:
[( 86 - 721 ) ÷ 721] x 100 = -88.07%
Formula
Percentage change = [(86 - 721) / 721] x 100
Subtract the new number by the original number
86 - 721 = -635
-635 ÷ 721 = -0.8807212205270458
-0.8807212205270458 x 100 = -88.07%