31.08% is the change from 251 to 329
Calculation steps:
[( 329 - 251 ) ÷ 251] x 100 = 31.08%
Formula
Percentage change = [(329 - 251) / 251] x 100
Subtract the new number by the original number
329 - 251 = 78
78 ÷ 251 = 0.3107569721115538
0.3107569721115538 x 100 = 31.08%