-2.57% is the change from 740 to 721
Calculation steps:
[( 721 - 740 ) ÷ 740] x 100 = -2.57%
Formula
Percentage change = [(721 - 740) / 740] x 100
Subtract the new number by the original number
721 - 740 = -19
-19 ÷ 740 = -0.025675675675675677
-0.025675675675675677 x 100 = -2.57%