53.39% is the change from 339 to 520
Calculation steps:
[( 520 - 339 ) ÷ 339] x 100 = 53.39%
Formula
Percentage change = [(520 - 339) / 339] x 100
Subtract the new number by the original number
520 - 339 = 181
181 ÷ 339 = 0.5339233038348082
0.5339233038348082 x 100 = 53.39%