2840% is the change from 15 to 441
Calculation steps:
[( 441 - 15 ) ÷ 15] x 100 = 2840%
Formula
Percentage change = [(441 - 15) / 15] x 100
Subtract the new number by the original number
441 - 15 = 426
426 ÷ 15 = 28.4
28.4 x 100 = 2840%
Example