24% is the change from 25 to 31
Calculation steps:
[( 31 - 25 ) ÷ 25] x 100 = 24%
Formula
Percentage change = [(31 - 25) / 25] x 100
Subtract the new number by the original number
31 - 25 = 6
6 ÷ 25 = 0.24
0.24 x 100 = 24%
Example