2880% is the change from 15 to 447
Calculation steps:
[( 447 - 15 ) ÷ 15] x 100 = 2880%
Formula
Percentage change = [(447 - 15) / 15] x 100
Subtract the new number by the original number
447 - 15 = 432
432 ÷ 15 = 28.8
28.8 x 100 = 2880%
Example