53.33% is the change from 330 to 506
Calculation steps:
[( 506 - 330 ) ÷ 330] x 100 = 53.33%
Formula
Percentage change = [(506 - 330) / 330] x 100
Subtract the new number by the original number
506 - 330 = 176
176 ÷ 330 = 0.5333333333333333
0.5333333333333333 x 100 = 53.33%