Tableau can only create dashboard from Data, not from Pie chart. Please provide at least couple records from your data set to solve the problem posted.
Please refer to the below screenshot and confirm the output. Let me also know if you need any modification to the way output is shown. I have created a sample data on my own which I am attaching to this thread.
Here is my sample data screenshot.
Let me know if this helps.
Thanks and Regards,