57.01% is the change from 221 to 347
Calculation steps:
[( 347 - 221 ) ÷ 221] x 100 = 57.01%
Formula
Percentage change = [(347 - 221) / 221] x 100
Subtract the new number by the original number
347 - 221 = 126
126 ÷ 221 = 0.5701357466063348
0.5701357466063348 x 100 = 57.01%