3905.56% is the change from 18 to 721
Calculation steps:
[( 721 - 18 ) ÷ 18] x 100 = 3905.56%
Formula
Percentage change = [(721 - 18) / 18] x 100
Subtract the new number by the original number
721 - 18 = 703
703 ÷ 18 = 39.05555555555556
39.05555555555556 x 100 = 3905.56%