28.02% is the change from 257 to 329
Calculation steps:
[( 329 - 257 ) ÷ 257] x 100 = 28.02%
Formula
Percentage change = [(329 - 257) / 257] x 100
Subtract the new number by the original number
329 - 257 = 72
72 ÷ 257 = 0.2801556420233463
0.2801556420233463 x 100 = 28.02%