3.74% is the change from 721 to 748
Calculation steps:
[( 748 - 721 ) ÷ 721] x 100 = 3.74%
Formula
Percentage change = [(748 - 721) / 721] x 100
Subtract the new number by the original number
748 - 721 = 27
27 ÷ 721 = 0.03744798890429958
0.03744798890429958 x 100 = 3.74%