The easiest way to do so is to find the user and the course or learning path in question in My Team Dashboard.
In the left navigation, make sure you are in the Team Workspace.
When in the Team Workspace, select My Team Dashboard and then select Training.
After selecting the appropriate course or learning path, overdue info, as well as the overall completion rate and progress is displayed. You can also dive deeper into individual details.
Reporting Spreadsheet
You are also able to download a spreadsheet for offline viewing, if needed.