-88.49% is the change from 721 to 83
Calculation steps:
[( 83 - 721 ) ÷ 721] x 100 = -88.49%
Formula
Percentage change = [(83 - 721) / 721] x 100
Subtract the new number by the original number
83 - 721 = -638
-638 ÷ 721 = -0.8848821081830791
-0.8848821081830791 x 100 = -88.49%