21.26% is the change from 254 to 308
Calculation steps:
[( 308 - 254 ) ÷ 254] x 100 = 21.26%
Formula
Percentage change = [(308 - 254) / 254] x 100
Subtract the new number by the original number
308 - 254 = 54
54 ÷ 254 = 0.2125984251968504
0.2125984251968504 x 100 = 21.26%