36.36% is the change from 11 to 15
Calculation steps:
[( 15 - 11 ) ÷ 11] x 100 = 36.36%
Formula
Percentage change = [(15 - 11) / 11] x 100
Subtract the new number by the original number
15 - 11 = 4
4 ÷ 11 = 0.36363636363636365
0.36363636363636365 x 100 = 36.36%