5.31% is the change from 339 to 357
Calculation steps:
[( 357 - 339 ) ÷ 339] x 100 = 5.31%
Formula
Percentage change = [(357 - 339) / 339] x 100
Subtract the new number by the original number
357 - 339 = 18
18 ÷ 339 = 0.05309734513274336
0.05309734513274336 x 100 = 5.31%