12.09% is the change from 91 to 102
Calculation steps:
[( 102 - 91 ) ÷ 91] x 100 = 12.09%
Formula
Percentage change = [(102 - 91) / 91] x 100
Subtract the new number by the original number
102 - 91 = 11
11 ÷ 91 = 0.12087912087912088
0.12087912087912088 x 100 = 12.09%