103.2% is the change from 125 to 254
Calculation steps:
[( 254 - 125 ) ÷ 125] x 100 = 103.2%
Formula
Percentage change = [(254 - 125) / 125] x 100
Subtract the new number by the original number
254 - 125 = 129
129 ÷ 125 = 1.032
1.032 x 100 = 103.2%
Example