4193.33% is the change from 15 to 644
Calculation steps:
[( 644 - 15 ) ÷ 15] x 100 = 4193.33%
Formula
Percentage change = [(644 - 15) / 15] x 100
Subtract the new number by the original number
644 - 15 = 629
629 ÷ 15 = 41.93333333333333
41.93333333333333 x 100 = 4193.33%