12.21% is the change from 303 to 340
Calculation steps:
[( 340 - 303 ) ÷ 303] x 100 = 12.21%
Formula
Percentage change = [(340 - 303) / 303] x 100
Subtract the new number by the original number
340 - 303 = 37
37 ÷ 303 = 0.12211221122112212
0.12211221122112212 x 100 = 12.21%