First Step we can create one calculation.
We can create one calc as one.
Create pie chart with product and sales.
Drag this one calc into coloumn two times and select dual axis.
Un check aggregation in analysis menu.
Remove axis headers
Select first one field in marks section and increase size of pie.
Drag the Product into colour and sales into label.
Select another one calc in marks and drag the new calculated total sales into label
-select mark as circle
-change colour as white
-Select size and reduce size
Donut chart attached.