13.68% is the change from 307 to 349
Calculation steps:
[( 349 - 307 ) ÷ 307] x 100 = 13.68%
Formula
Percentage change = [(349 - 307) / 307] x 100
Subtract the new number by the original number
349 - 307 = 42
42 ÷ 307 = 0.13680781758957655
0.13680781758957655 x 100 = 13.68%