0.47% is the change from 638 to 641
Calculation steps:
[( 641 - 638 ) ÷ 638] x 100 = 0.47%
Formula
Percentage change = [(641 - 638) / 638] x 100
Subtract the new number by the original number
641 - 638 = 3
3 ÷ 638 = 0.004702194357366771
0.004702194357366771 x 100 = 0.47%