22.71% is the change from 251 to 308
Calculation steps:
[( 308 - 251 ) ÷ 251] x 100 = 22.71%
Formula
Percentage change = [(308 - 251) / 251] x 100
Subtract the new number by the original number
308 - 251 = 57
57 ÷ 251 = 0.22709163346613545
0.22709163346613545 x 100 = 22.71%