52.37% is the change from 338 to 515
Calculation steps:
[( 515 - 338 ) ÷ 338] x 100 = 52.37%
Formula
Percentage change = [(515 - 338) / 338] x 100
Subtract the new number by the original number
515 - 338 = 177
177 ÷ 338 = 0.5236686390532544
0.5236686390532544 x 100 = 52.37%