41% is the change from 339 to 478
Calculation steps:
[( 478 - 339 ) ÷ 339] x 100 = 41%
Formula
Percentage change = [(478 - 339) / 339] x 100
Subtract the new number by the original number
478 - 339 = 139
139 ÷ 339 = 0.41002949852507375
0.41002949852507375 x 100 = 41%