-87.66% is the change from 721 to 89
Calculation steps:
[( 89 - 721 ) ÷ 721] x 100 = -87.66%
Formula
Percentage change = [(89 - 721) / 721] x 100
Subtract the new number by the original number
89 - 721 = -632
-632 ÷ 721 = -0.8765603328710125
-0.8765603328710125 x 100 = -87.66%