57.31% is the change from 349 to 549
Calculation steps:
[( 549 - 349 ) ÷ 349] x 100 = 57.31%
Formula
Percentage change = [(549 - 349) / 349] x 100
Subtract the new number by the original number
549 - 349 = 200
200 ÷ 349 = 0.5730659025787965
0.5730659025787965 x 100 = 57.31%