How to Add Subtotal in Power BI

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Here’s how to do it:

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1. Select your data and go to the 'Visualizations' pane. Select the 'Matrix' chart.
2. Go to the 'Format' pane.
3. Turn 'Column Subtotals' ON.
4. Turn 'Row Subtotals' ON.
5. Power BI automatically adds subtotals for the Row and Column groups.