-98.79% is the change from 580 to 7
Calculation steps:
[( 7 - 580 ) ÷ 580] x 100 = -98.79%
Formula
Percentage change = [(7 - 580) / 580] x 100
Subtract the new number by the original number
7 - 580 = -573
-573 ÷ 580 = -0.9879310344827587
-0.9879310344827587 x 100 = -98.79%