Hi Nithin,
Pie chart is used to show comparison of single vs total entity. Pie chart is best to denote at the highest composite form of a field. As the measures increases, the chart becomes unclear to understand.
1. Select the measure/dimension you want to plot the chart. Click on show me and select the pie chart.
![](https://www.edureka.co/community/?qa=blob&qa_blobid=5432720927681406431)
2. Right click on the field and click on quick table calculation and select percent of total.
![](https://www.edureka.co/community/?qa=blob&qa_blobid=8685496766097558677)
3. After applying quick calculation on field.
![](https://www.edureka.co/community/?qa=blob&qa_blobid=6997075356804557628)
Hope this helps you.
For an in-depth explanation check out Tableau Training Course details.