27.14% is the change from 339 to 431
Calculation steps:
[( 431 - 339 ) ÷ 339] x 100 = 27.14%
Formula
Percentage change = [(431 - 339) / 339] x 100
Subtract the new number by the original number
431 - 339 = 92
92 ÷ 339 = 0.2713864306784661
0.2713864306784661 x 100 = 27.14%