4.64% is the change from 388 to 406
Calculation steps:
[( 406 - 388 ) ÷ 388] x 100 = 4.64%
Formula
Percentage change = [(406 - 388) / 388] x 100
Subtract the new number by the original number
406 - 388 = 18
18 ÷ 388 = 0.04639175257731959
0.04639175257731959 x 100 = 4.64%