0.16% is the change from 637 to 638
Calculation steps:
[( 638 - 637 ) ÷ 637] x 100 = 0.16%
Formula
Percentage change = [(638 - 637) / 637] x 100
Subtract the new number by the original number
638 - 637 = 1
1 ÷ 637 = 0.0015698587127158557
0.0015698587127158557 x 100 = 0.16%