When measuring adoption it’s useful to see the number of logged in users for a given period as a percentage of the total user base. Since Salesforce reports can only report on what data is visible (as is to be expected) it’s not possible to compare logged in users to total users. There is a way around this by using a joined report.
- Create a joined report using User as the primary object. This will create a Users block.
- Use a common field and drag it over to an empty space in the preview area. This will create a second Users block. Filter this block on logged-in users for the desired timeframe.
- Create a cross-object formula field using the Record Count summary fields.