15.93% is the change from 339 to 393
Calculation steps:
[( 393 - 339 ) ÷ 339] x 100 = 15.93%
Formula
Percentage change = [(393 - 339) / 339] x 100
Subtract the new number by the original number
393 - 339 = 54
54 ÷ 339 = 0.1592920353982301
0.1592920353982301 x 100 = 15.93%