227.6% is the change from 221 to 724
Calculation steps:
[( 724 - 221 ) ÷ 221] x 100 = 227.6%
Formula
Percentage change = [(724 - 221) / 221] x 100
Subtract the new number by the original number
724 - 221 = 503
503 ÷ 221 = 2.276018099547511
2.276018099547511 x 100 = 227.6%