28.71% is the change from 303 to 390
Calculation steps:
[( 390 - 303 ) ÷ 303] x 100 = 28.71%
Formula
Percentage change = [(390 - 303) / 303] x 100
Subtract the new number by the original number
390 - 303 = 87
87 ÷ 303 = 0.2871287128712871
0.2871287128712871 x 100 = 28.71%