12.01% is the change from 308 to 345
Calculation steps:
[( 345 - 308 ) ÷ 308] x 100 = 12.01%
Formula
Percentage change = [(345 - 308) / 308] x 100
Subtract the new number by the original number
345 - 308 = 37
37 ÷ 308 = 0.12012987012987013
0.12012987012987013 x 100 = 12.01%