Test Cases Percentage calculation within AzureDevOps widgets

I would like to have user-friendly visibility of the percentage of test cases, basing on a particular filter, for example: to have the percentage of the automated test cases comparing to the total number of test cases.

Is there a way to reach this scope? 

The pie charts, for example, seems can show only the numbers of test cases (basing on the automation status), but I would like to directy view the percentage (like I can do with Excel) to make it more easy to retrieve it without the need of a manual calculation.

I hope that someone can help me!

Thanks and regards,

Simona