2593.33% is the change from 15 to 404
Calculation steps:
[( 404 - 15 ) ÷ 15] x 100 = 2593.33%
Formula
Percentage change = [(404 - 15) / 15] x 100
Subtract the new number by the original number
404 - 15 = 389
389 ÷ 15 = 25.933333333333334
25.933333333333334 x 100 = 2593.33%