49.32% is the change from 221 to 330
Calculation steps:
[( 330 - 221 ) ÷ 221] x 100 = 49.32%
Formula
Percentage change = [(330 - 221) / 221] x 100
Subtract the new number by the original number
330 - 221 = 109
109 ÷ 221 = 0.49321266968325794
0.49321266968325794 x 100 = 49.32%