2833.33% is the change from 15 to 440
Calculation steps:
[( 440 - 15 ) ÷ 15] x 100 = 2833.33%
Formula
Percentage change = [(440 - 15) / 15] x 100
Subtract the new number by the original number
440 - 15 = 425
425 ÷ 15 = 28.333333333333332
28.333333333333332 x 100 = 2833.33%