28.09% is the change from 388 to 497
Calculation steps:
[( 497 - 388 ) ÷ 388] x 100 = 28.09%
Formula
Percentage change = [(497 - 388) / 388] x 100
Subtract the new number by the original number
497 - 388 = 109
109 ÷ 388 = 0.2809278350515464
0.2809278350515464 x 100 = 28.09%