3433.33% is the change from 15 to 530
Calculation steps:
[( 530 - 15 ) ÷ 15] x 100 = 3433.33%
Formula
Percentage change = [(530 - 15) / 15] x 100
Subtract the new number by the original number
530 - 15 = 515
515 ÷ 15 = 34.333333333333336
34.333333333333336 x 100 = 3433.33%