To change the date range in a Dashboard Tile, you must first have a Custom Dashboard, the Default Dashboards cannot be edited.
The easiest way to create a Custom Dashboard is to copy one of the Default Dashboards and then make the changes required. Please see the following help articles to start your customisation:
Video below shows how to change the date range that is displayed in a Dashboard Tile:
Dates in the Dashboards are controlled by the Data Sources that are attached to the individual tiles. There are a number of preset Data Sources, or for alternative settings you can create new ones.
Navigate to Dashboards > Dashboard Tools > Data Sources
Create New or Copy and update an existing Data Source
Configure the Dates required
Start Period
Fixed > Type and Number of Periods or
Dynamic periods > Type and end date
Check the Preview to confirm the correct information has been selected
Attach the Data Source to the Dashboard in Dashboard Manager
Go to the Builder screen
Select the Tile you wish to update
On the Cog, at the bottom, click the Data Source selected
Choose the Data Source to use for the Tile
OK and wait for the Dashboard Tile to Rebuild
SAVE CHANGES at the top right above the Dashboard