#89 — Calculate Proportion Using the Aggregation Values of the Data from the Same Group

Problem description & analysis:

Here below is an annual and quarterly sales data table:

Task: Calculate the proportion of each quarterly sales to the total sales of the year (to calculate in cell D1).

Solution:

Use SPL XLL and the code is as follows:

=spl("=E(?1).group(Year).((a=~.sum(Sales),~.(Sales/a))).conj().new(~:Proportion)",A1:C21)
The results are shown below:

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