71.97% is the change from 421 to 724
Calculation steps:
[( 724 - 421 ) ÷ 421] x 100 = 71.97%
Formula
Percentage change = [(724 - 421) / 421] x 100
Subtract the new number by the original number
724 - 421 = 303
303 ÷ 421 = 0.7197149643705463
0.7197149643705463 x 100 = 71.97%