-90.15% is the change from 721 to 71
Calculation steps:
[( 71 - 721 ) ÷ 721] x 100 = -90.15%
Formula
Percentage change = [(71 - 721) / 721] x 100
Subtract the new number by the original number
71 - 721 = -650
-650 ÷ 721 = -0.9015256588072122
-0.9015256588072122 x 100 = -90.15%