Step by step calculation demand
1. Take the average value sold in the last 3 months by product
2. Make a ranking of this value taking the 25 worst
3. Create a monthly list of the 25 worst of each month and follow the evolution)
4. Take this single value and plot it on the cohort showing the evolution of the list.
5. A column with the Total and another with the quantity (Count)
Example of how the result should look
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ANDRE SOUZA
Analista de BI
ITU
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