7212.5% is the change from 8 to 585
Calculation steps:
[( 585 - 8 ) ÷ 8] x 100 = 7212.5%
Formula
Percentage change = [(585 - 8) / 8] x 100
Subtract the new number by the original number
585 - 8 = 577
577 ÷ 8 = 72.125
72.125 x 100 = 7212.5%
Example