-88.97% is the change from 580 to 64
Calculation steps:
[( 64 - 580 ) ÷ 580] x 100 = -88.97%
Formula
Percentage change = [(64 - 580) / 580] x 100
Subtract the new number by the original number
64 - 580 = -516
-516 ÷ 580 = -0.8896551724137931
-0.8896551724137931 x 100 = -88.97%