49.11% is the change from 338 to 504
Calculation steps:
[( 504 - 338 ) ÷ 338] x 100 = 49.11%
Formula
Percentage change = [(504 - 338) / 338] x 100
Subtract the new number by the original number
504 - 338 = 166
166 ÷ 338 = 0.4911242603550296
0.4911242603550296 x 100 = 49.11%