17.69% is the change from 390 to 459
Calculation steps:
[( 459 - 390 ) ÷ 390] x 100 = 17.69%
Formula
Percentage change = [(459 - 390) / 390] x 100
Subtract the new number by the original number
459 - 390 = 69
69 ÷ 390 = 0.17692307692307693
0.17692307692307693 x 100 = 17.69%