-11.1% is the change from 721 to 641
Calculation steps:
[( 641 - 721 ) ÷ 721] x 100 = -11.1%
Formula
Percentage change = [(641 - 721) / 721] x 100
Subtract the new number by the original number
641 - 721 = -80
-80 ÷ 721 = -0.11095700416088766
-0.11095700416088766 x 100 = -11.1%