4.08% is the change from 637 to 663
Calculation steps:
[( 663 - 637 ) ÷ 637] x 100 = 4.08%
Formula
Percentage change = [(663 - 637) / 637] x 100
Subtract the new number by the original number
663 - 637 = 26
26 ÷ 637 = 0.04081632653061224
0.04081632653061224 x 100 = 4.08%