Showing results for 
Search instead for 
Did you mean: 
Not applicable

Trend Analysis with Data Refresh

I receive data on a monthly basis which I then summarize for basic calculations such as average accuracy percentages. I would like to create a trend month of month to show the change in accuracy percentage from month to month. The problem I have is that each new file I receive overwrites the previous file.


  1. Is there a way to calculate the avg accuracy percentage, store that value in a new table and attribute the month to it? Then I would use that table to create a trend graph? ( I am using Power BI Pro License if that matters). 



Please let me know if I am drastically overthinking this. Thank you for your help!

Community Support
Community Support

Hi @Anonymous ,

If you want to make trend analysis, it should have the data for previous dates. Then how will you get these data? Where the new file is from? Whether it is possible to download and save it when received? How the data looks like? What's the logic of avg accuracy percentage?

Best Regards


Community Support Team _ Rena
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Helpful resources

UG GA Amplification 768x460.png

Launching new user group features

Learn how to create your own user groups today!

November Power BI Update 768x460.png

Check it Out!

Click here to read more about the November 2021 Updates!

M365 768x460.jpg

Microsoft 365 Collaboration Conference | December 7–9, 2021

Join us, in-person, December 7–9 in Las Vegas, for the largest gathering of the Microsoft community in the world.