15825% is the change from 4 to 637
Calculation steps:
[( 637 - 4 ) ÷ 4] x 100 = 15825%
Formula
Percentage change = [(637 - 4) / 4] x 100
Subtract the new number by the original number
637 - 4 = 633
633 ÷ 4 = 158.25
158.25 x 100 = 15825%
Example