Option 1: Use Two Pie Charts
Step 1: Create a pie chart
- In Tableau Desktop, connect to Superstore sample data.
 - Under Marks, select the Pie mark type.
 - Drag Customer Segment to Color.
 - Drag Sales to Size.
 - Click Label, and then select Show mark labels.
 - Resize the pie chart as desired.
 
Step 2: Switch to the dual-axis chart
- Drag Number of Records to Rows.
 - Drag Number of Records to Rows again.
 - On Rows, right-click both instances of Number of Records, and then select Measure(Sum) > Minimum.
 - On Rows, right-click the second instance of Number of Records, and then select Dual Axis.
 
Step 3: Change the second pie chart to a circle
- At the bottom of the Marks card, click MIN(Number of Records) (2).
 - Remove Customer Segment from Color.
 - Remove Sales from Size.
 - Click Color, and then choose the same color as the background. In this example, click white.
 - Click Size, and then drag the slider to the left to make the circle smaller.
 - Drag Sales to Label.
 - Right-click on each of the axes and uncheck Show Header.
 
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