-85.52% is the change from 580 to 84
Calculation steps:
[( 84 - 580 ) ÷ 580] x 100 = -85.52%
Formula
Percentage change = [(84 - 580) / 580] x 100
Subtract the new number by the original number
84 - 580 = -496
-496 ÷ 580 = -0.8551724137931035
-0.8551724137931035 x 100 = -85.52%