121.43% is the change from 14 to 31
Calculation steps:
[( 31 - 14 ) ÷ 14] x 100 = 121.43%
Formula
Percentage change = [(31 - 14) / 14] x 100
Subtract the new number by the original number
31 - 14 = 17
17 ÷ 14 = 1.2142857142857142
1.2142857142857142 x 100 = 121.43%