15% is the change from 60 to 69
Calculation steps:
[( 69 - 60 ) ÷ 60] x 100 = 15%
Formula
Percentage change = [(69 - 60) / 60] x 100
Subtract the new number by the original number
69 - 60 = 9
9 ÷ 60 = 0.15
0.15 x 100 = 15%
Example