30.66% is the change from 349 to 456
Calculation steps:
[( 456 - 349 ) ÷ 349] x 100 = 30.66%
Formula
Percentage change = [(456 - 349) / 349] x 100
Subtract the new number by the original number
456 - 349 = 107
107 ÷ 349 = 0.30659025787965616
0.30659025787965616 x 100 = 30.66%