-3.22% is the change from 745 to 721
Calculation steps:
[( 721 - 745 ) ÷ 745] x 100 = -3.22%
Formula
Percentage change = [(721 - 745) / 745] x 100
Subtract the new number by the original number
721 - 745 = -24
-24 ÷ 745 = -0.032214765100671144
-0.032214765100671144 x 100 = -3.22%