-99.66% is the change from 580 to 2
Calculation steps:
[( 2 - 580 ) ÷ 580] x 100 = -99.66%
Formula
Percentage change = [(2 - 580) / 580] x 100
Subtract the new number by the original number
2 - 580 = -578
-578 ÷ 580 = -0.996551724137931
-0.996551724137931 x 100 = -99.66%