3246.67% is the change from 15 to 502
Calculation steps:
[( 502 - 15 ) ÷ 15] x 100 = 3246.67%
Formula
Percentage change = [(502 - 15) / 15] x 100
Subtract the new number by the original number
502 - 15 = 487
487 ÷ 15 = 32.46666666666667
32.46666666666667 x 100 = 3246.67%