11.01% is the change from 109 to 121
Calculation steps:
[( 121 - 109 ) ÷ 109] x 100 = 11.01%
Formula
Percentage change = [(121 - 109) / 109] x 100
Subtract the new number by the original number
121 - 109 = 12
12 ÷ 109 = 0.11009174311926606
0.11009174311926606 x 100 = 11.01%