3.96% is the change from 303 to 315
Calculation steps:
[( 315 - 303 ) ÷ 303] x 100 = 3.96%
Formula
Percentage change = [(315 - 303) / 303] x 100
Subtract the new number by the original number
315 - 303 = 12
12 ÷ 303 = 0.039603960396039604
0.039603960396039604 x 100 = 3.96%