The Burn-down chart widget shows actual versus planned hours and shows trend lines. The widget is available at project level only.
The Burn-down chart widget
Configuring the burn-down chart: 
•Click on 
to copy the widget to the clipboard.
•Click on Configure to configure the widget.
•In the widget you can toggle between Burn-down versus Burn-up, and you can filter on Skill and/or Resource.