Skip to main content
Showing results for 
Search instead for 
Did you mean: 

Find everything you need to get certified on Fabric—skills challenges, live sessions, exam prep, role guidance, and more. Get started

Helper I
Helper I

Need help with Month over month calculation

I have input dataset like this :



ItemSub ItemMonthCost
Item 1Subitem 130-Jun-23200
Item 1Subitem 230-Jun-23300
Item 1Subitem 131-May-23400
Item 1Subitem 231-May-23600
Item 2Subitem 131-May-23500



I want to caculate Month over month cost saving  i.e June month cost - May month cost for the various items and subitems .

Require a matrix outout like this -


ItemSub Item30-Jun-2331-May-23Cost Saving
Item 1Subitem 1                 200400-200
Item 1Subitem 2                 300600-300
Item 2Subitem 1                    -  500-500
 Total row                 5001500-1000


The challenge I am facing is this .. If you see the Item 2 in the input data ,  It does NOT have any record (i.e cost)  for June month . There is May cost which is 500 . In this case I want June cost to be considered zero and cost saving calculated as (0-500) = -500 and the above matrix to be created with proper totals 


In other words it is as good as inserting below row in input data 


Item 2Subitem 130-Jun-230
Community Support
Community Support

Hi @ashwinkolte ,

Please reference the table in powerquery.


Select the month column and pivot.



add a custom column.


create a new table visual.


Best Regards,

Community Support Team


If there is any post helps, then please consider Accept it as the solution  to help the other members find it more quickly. If I misunderstand your needs or you still have problems on it, please feel free to let us know. Thanks a lot!

How to get your questions answered quickly --  How to provide sample data in the Power BI Forum

Hi @v-cgao-msft 


The table in question is a calculated table . Hence cannot edit in power query . Also please note that the real life data would contain many months and not just june and may

Helpful resources

July 2024 Power BI Update

Power BI Monthly Update - July 2024

Check out the July 2024 Power BI update to learn about new features.


Fabric Community Update - June 2024

Get the latest Fabric updates from Build 2024, key Skills Challenge voucher deadlines, top blogs, forum posts, and product ideas.

Top Solution Authors