13.22% is the change from 121 to 137
Calculation steps:
[( 137 - 121 ) ÷ 121] x 100 = 13.22%
Formula
Percentage change = [(137 - 121) / 121] x 100
Subtract the new number by the original number
137 - 121 = 16
16 ÷ 121 = 0.1322314049586777
0.1322314049586777 x 100 = 13.22%