12.5% is the change from 24 to 27
Calculation steps:
[( 27 - 24 ) ÷ 24] x 100 = 12.5%
Formula
Percentage change = [(27 - 24) / 24] x 100
Subtract the new number by the original number
27 - 24 = 3
3 ÷ 24 = 0.125
0.125 x 100 = 12.5%
Example