318.6% is the change from 172 to 720
Calculation steps:
[( 720 - 172 ) ÷ 172] x 100 = 318.6%
Formula
Percentage change = [(720 - 172) / 172] x 100
Subtract the new number by the original number
720 - 172 = 548
548 ÷ 172 = 3.186046511627907
3.186046511627907 x 100 = 318.6%