2460% is the change from 15 to 384
Calculation steps:
[( 384 - 15 ) ÷ 15] x 100 = 2460%
Formula
Percentage change = [(384 - 15) / 15] x 100
Subtract the new number by the original number
384 - 15 = 369
369 ÷ 15 = 24.6
24.6 x 100 = 2460%
Example