27.69% is the change from 390 to 498
Calculation steps:
[( 498 - 390 ) ÷ 390] x 100 = 27.69%
Formula
Percentage change = [(498 - 390) / 390] x 100
Subtract the new number by the original number
498 - 390 = 108
108 ÷ 390 = 0.27692307692307694
0.27692307692307694 x 100 = 27.69%