50.91% is the change from 330 to 498
Calculation steps:
[( 498 - 330 ) ÷ 330] x 100 = 50.91%
Formula
Percentage change = [(498 - 330) / 330] x 100
Subtract the new number by the original number
498 - 330 = 168
168 ÷ 330 = 0.509090909090909
0.509090909090909 x 100 = 50.91%