31.52% is the change from 330 to 434
Calculation steps:
[( 434 - 330 ) ÷ 330] x 100 = 31.52%
Formula
Percentage change = [(434 - 330) / 330] x 100
Subtract the new number by the original number
434 - 330 = 104
104 ÷ 330 = 0.3151515151515151
0.3151515151515151 x 100 = 31.52%