7257.14% is the change from 7 to 515
Calculation steps:
[( 515 - 7 ) ÷ 7] x 100 = 7257.14%
Formula
Percentage change = [(515 - 7) / 7] x 100
Subtract the new number by the original number
515 - 7 = 508
508 ÷ 7 = 72.57142857142857
72.57142857142857 x 100 = 7257.14%