I need to compare the totals between the current and previous month

[Anonymous]

Morning experts,

I've got a report which holds totals by month. I've got a data card which shows a specific total, and the user can select either the year to date, or a specific month using a report level slicer and the data card changes accordingly.

I want a new measure which finds the previous month's total, and subtracts this from the current month total to see the difference. I can then use conditional formatting to colour the number whther it's a good or bad change. 

To add a complication, I am excluding the number 555 from my measure, as this indicates a 'not applicable' in the column. 

I have a formula, which is not working in the slightest:

MY MEASURE = CALCULATE(SUM(Database[TOTAL),Database[TOTAL]<>555)-
CALCULATE(SUM(Database[TOTAL]),PREVIOUSMONTH(CalendarYear[Date]),Database[TOTAL]<>555)

Any suggestions would be happily tried! 🙂 

[PattemManohar]

@Anonymous Please provide the sample data which will be really helpful to solve your issue quicker.

[Anonymous]

Hi there,

Here is a screenshot which shows the data I have - the totals by month and how i've removed the '555' within the visual filter. 

What I want now is a measure that basically does February less January (so 1374-1973), excluding any '555'. 

Screenshot of PBI Desktop

[Anonymous · Accepted solution]

So as I didn't get a response on here I managed to find out that I had to create a measure that calculates the previous month first. 

I did this using :

Previous Month Total = CALCULATE(SUM(Database[total]),PREVIOUSMONTH(Database[Date].[Date]))

I then simply created a second measure which subtracted the Database[Previous Month Total] from the Database[Total]. Job done!