3700% is the change from 15 to 570
Calculation steps:
[( 570 - 15 ) ÷ 15] x 100 = 3700%
Formula
Percentage change = [(570 - 15) / 15] x 100
Subtract the new number by the original number
570 - 15 = 555
555 ÷ 15 = 37
37 x 100 = 3700%
Example