2940% is the change from 15 to 456
Calculation steps:
[( 456 - 15 ) ÷ 15] x 100 = 2940%
Formula
Percentage change = [(456 - 15) / 15] x 100
Subtract the new number by the original number
456 - 15 = 441
441 ÷ 15 = 29.4
29.4 x 100 = 2940%
Example