-88.63% is the change from 721 to 82
Calculation steps:
[( 82 - 721 ) ÷ 721] x 100 = -88.63%
Formula
Percentage change = [(82 - 721) / 721] x 100
Subtract the new number by the original number
82 - 721 = -639
-639 ÷ 721 = -0.8862690707350902
-0.8862690707350902 x 100 = -88.63%