DAX Top N as % of Total Measure

Expresses the combined sales of the top N items as a percentage of overall sales.

Ranking and Top NAdvancedtop npercentagetopn

DAX code

Top N as % of Total =
VAR N = 5
VAR TopItems = TOPN(N, ALLSELECTED('Product'[ProductName]), [Total Sales])
VAR TopSales = CALCULATE([Total Sales], TopItems)
RETURN
    DIVIDE(TopSales, CALCULATE([Total Sales], ALLSELECTED('Product')))

Notes

Replace N with a What-If parameter to make it slicer-driven.

Requirements

Builds on these measures

How to use this measure

  1. In Power BI Desktop, select the table that should hold the measure and choose New measure on the ribbon.
  2. Paste the code, then replace the placeholder table and column names with your own. The My table names fields above do this for you.
  3. Run it through the DAX Formatter if you want it laid out in your team's style.

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