6262.5% is the change from 8 to 509
Calculation steps:
[( 509 - 8 ) ÷ 8] x 100 = 6262.5%
Formula
Percentage change = [(509 - 8) / 8] x 100
Subtract the new number by the original number
509 - 8 = 501
501 ÷ 8 = 62.625
62.625 x 100 = 6262.5%
Example