27.44% is the change from 390 to 497
Calculation steps:
[( 497 - 390 ) ÷ 390] x 100 = 27.44%
Formula
Percentage change = [(497 - 390) / 390] x 100
Subtract the new number by the original number
497 - 390 = 107
107 ÷ 390 = 0.2743589743589744
0.2743589743589744 x 100 = 27.44%