54.24% is the change from 330 to 509
Calculation steps:
[( 509 - 330 ) ÷ 330] x 100 = 54.24%
Formula
Percentage change = [(509 - 330) / 330] x 100
Subtract the new number by the original number
509 - 330 = 179
179 ÷ 330 = 0.5424242424242425
0.5424242424242425 x 100 = 54.24%