12.22% is the change from 311 to 349
Calculation steps:
[( 349 - 311 ) ÷ 311] x 100 = 12.22%
Formula
Percentage change = [(349 - 311) / 311] x 100
Subtract the new number by the original number
349 - 311 = 38
38 ÷ 311 = 0.12218649517684887
0.12218649517684887 x 100 = 12.22%