How to Show Percentage in Power BI ? Power BI interview questions and answers 293

 How to Show Percentage in Power BI ?

There are several ways to show percentages in Power BI, depending on your specific needs and the context of your data. Here are some options:

1. Formatting:

• Right-click the target column: If you simply want to display the values as percentages in your table or other visuals, right-click the column header and choose "Format."

• Select "Percentage": In the "Number format" section, choose the desired percentage format (e.g., "Percent - 0 decimals," "Percent - 2 decimals").

2. Quick Measures:

• Quick measures offer an easy way to calculate various percentage values. If you want to show, for example, the percentage of each row compared to a total, you can use the "Quick Measures" options:

• "% of Grand Total": This calculates the percentage of each value in the current column relative to the sum of all values in the column.

• "% of Total": This calculates the percentage of each value in the current column relative to the sum of all values shown in the current visual (filtered data).

3. DAX Measures:

• For more complex percentage calculations, you can create custom DAX measures. Here are some examples:

• Calculate percentage change from previous period:

Code snippet
% Change from Previous Period = CALCULATE(PERCENTVARIANCE, Sales[Sales Amount], DATEADD(Calendar[Date], -1, MONTH))

• Calculate percentage contribution to a total:

Code snippet
% Contribution to Total = DIVIDE(SUM(Sales[Sales Amount]), SUMX(ALL(Sales), SUM(Sales[Sales Amount])), 0) * 100

4. Visualizations:

• Choose visuals that naturally lend themselves to displaying percentages, such as pie charts, donut charts, bar charts with percentage labels, or stacked bar charts.

Additional Tips:

• Context and clarity: Clearly label your visuals and axes to ensure users understand what percentages are being displayed and in relation to what.

• Precision: Choose the appropriate number of decimal places for your percentage values to avoid cluttering the visuals.

• Color formatting: Consider using color formatting to highlight higher or lower percentages for additional visual cues.

By choosing the appropriate method based on your needs, you can effectively show percentages in Power BI reports and provide meaningful insights to your audience.

Feel free to ask if you have any further questions about specific percentage calculations or visual representations in Power BI!