631.25% is the change from 80 to 585
Calculation steps:
[( 585 - 80 ) ÷ 80] x 100 = 631.25%
Formula
Percentage change = [(585 - 80) / 80] x 100
Subtract the new number by the original number
585 - 80 = 505
505 ÷ 80 = 6.3125
6.3125 x 100 = 631.25%
Example