15925% is the change from 4 to 641
Calculation steps:
[( 641 - 4 ) ÷ 4] x 100 = 15925%
Formula
Percentage change = [(641 - 4) / 4] x 100
Subtract the new number by the original number
641 - 4 = 637
637 ÷ 4 = 159.25
159.25 x 100 = 15925%
Example