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Open the Power BI file in the above folder. It shows the following matrix:
Sales by environment and centre type
Your task is to use the CALCULATE function in an expression to return the following measure:
With this in mind, create a new measure in the All measures table called All environment contribution, and change your matrix to display this:
Reassuringly, your environmental contributions should sum to 100% for each row.
Create and display another measure called Grand total contribution which shows the ratio of sales to sales for all environments and all centre types:
Again reassuringly your grand total should be 100%.
You need to use the ALL function twice, to remove the environment constraint and the centre type constraint.
Save this file as No constraints, then close it down.
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