2.58% is the change from 388 to 398
Calculation steps:
[( 398 - 388 ) ÷ 388] x 100 = 2.58%
Formula
Percentage change = [(398 - 388) / 388] x 100
Subtract the new number by the original number
398 - 388 = 10
10 ÷ 388 = 0.02577319587628866
0.02577319587628866 x 100 = 2.58%