351.13% is the change from 221 to 997
Calculation steps:
[( 997 - 221 ) ÷ 221] x 100 = 351.13%
Formula
Percentage change = [(997 - 221) / 221] x 100
Subtract the new number by the original number
997 - 221 = 776
776 ÷ 221 = 3.51131221719457
3.51131221719457 x 100 = 351.13%