6512.5% is the change from 8 to 529
Calculation steps:
[( 529 - 8 ) ÷ 8] x 100 = 6512.5%
Formula
Percentage change = [(529 - 8) / 8] x 100
Subtract the new number by the original number
529 - 8 = 521
521 ÷ 8 = 65.125
65.125 x 100 = 6512.5%
Example