-10.12% is the change from 721 to 648
Calculation steps:
[( 648 - 721 ) ÷ 721] x 100 = -10.12%
Formula
Percentage change = [(648 - 721) / 721] x 100
Subtract the new number by the original number
648 - 721 = -73
-73 ÷ 721 = -0.10124826629680998
-0.10124826629680998 x 100 = -10.12%