48.39% is the change from 31 to 46
Calculation steps:
[( 46 - 31 ) ÷ 31] x 100 = 48.39%
Formula
Percentage change = [(46 - 31) / 31] x 100
Subtract the new number by the original number
46 - 31 = 15
15 ÷ 31 = 0.4838709677419355
0.4838709677419355 x 100 = 48.39%