-8.32% is the change from 721 to 661
Calculation steps:
[( 661 - 721 ) ÷ 721] x 100 = -8.32%
Formula
Percentage change = [(661 - 721) / 721] x 100
Subtract the new number by the original number
661 - 721 = -60
-60 ÷ 721 = -0.08321775312066575
-0.08321775312066575 x 100 = -8.32%