-88.21% is the change from 721 to 85
Calculation steps:
[( 85 - 721 ) ÷ 721] x 100 = -88.21%
Formula
Percentage change = [(85 - 721) / 721] x 100
Subtract the new number by the original number
85 - 721 = -636
-636 ÷ 721 = -0.8821081830790569
-0.8821081830790569 x 100 = -88.21%