36% is the change from 25 to 34
Calculation steps:
[( 34 - 25 ) ÷ 25] x 100 = 36%
Formula
Percentage change = [(34 - 25) / 25] x 100
Subtract the new number by the original number
34 - 25 = 9
9 ÷ 25 = 0.36
0.36 x 100 = 36%
Example