40.39% is the change from 307 to 431
Calculation steps:
[( 431 - 307 ) ÷ 307] x 100 = 40.39%
Formula
Percentage change = [(431 - 307) / 307] x 100
Subtract the new number by the original number
431 - 307 = 124
124 ÷ 307 = 0.40390879478827363
0.40390879478827363 x 100 = 40.39%