4140% is the change from 15 to 636
Calculation steps:
[( 636 - 15 ) ÷ 15] x 100 = 4140%
Formula
Percentage change = [(636 - 15) / 15] x 100
Subtract the new number by the original number
636 - 15 = 621
621 ÷ 15 = 41.4
41.4 x 100 = 4140%
Example