4.55% is the change from 638 to 667
Calculation steps:
[( 667 - 638 ) ÷ 638] x 100 = 4.55%
Formula
Percentage change = [(667 - 638) / 638] x 100
Subtract the new number by the original number
667 - 638 = 29
29 ÷ 638 = 0.045454545454545456
0.045454545454545456 x 100 = 4.55%