28.46% is the change from 390 to 501
Calculation steps:
[( 501 - 390 ) ÷ 390] x 100 = 28.46%
Formula
Percentage change = [(501 - 390) / 390] x 100
Subtract the new number by the original number
501 - 390 = 111
111 ÷ 390 = 0.2846153846153846
0.2846153846153846 x 100 = 28.46%