18.88% is the change from 339 to 403
Calculation steps:
[( 403 - 339 ) ÷ 339] x 100 = 18.88%
Formula
Percentage change = [(403 - 339) / 339] x 100
Subtract the new number by the original number
403 - 339 = 64
64 ÷ 339 = 0.1887905604719764
0.1887905604719764 x 100 = 18.88%