15.9% is the change from 390 to 452
Calculation steps:
[( 452 - 390 ) ÷ 390] x 100 = 15.9%
Formula
Percentage change = [(452 - 390) / 390] x 100
Subtract the new number by the original number
452 - 390 = 62
62 ÷ 390 = 0.15897435897435896
0.15897435897435896 x 100 = 15.9%