6237.5% is the change from 8 to 507
Calculation steps:
[( 507 - 8 ) ÷ 8] x 100 = 6237.5%
Formula
Percentage change = [(507 - 8) / 8] x 100
Subtract the new number by the original number
507 - 8 = 499
499 ÷ 8 = 62.375
62.375 x 100 = 6237.5%
Example