-11.79% is the change from 721 to 636
Calculation steps:
[( 636 - 721 ) ÷ 721] x 100 = -11.79%
Formula
Percentage change = [(636 - 721) / 721] x 100
Subtract the new number by the original number
636 - 721 = -85
-85 ÷ 721 = -0.11789181692094314
-0.11789181692094314 x 100 = -11.79%