Variance based on Period selected in Slicer

[Anonymous]

Date	Value	Name	Country
1/1/2021	542	Cost	US
1/2/2021	125	Cost	US
1/3/2021	634	Cost	US
... (up to 31/12/2022 for example)
1/1/2021	857	Cost2	US
1/2/2021	523	Cost2	US
1/3/2021	109	Cost2	US
... ... (up to 31/12/2022 for example)

I have a table with the date column, values, the name of the value and the country

I would like to build a table and slicers that shows the value of the selected month (e.g. 1/2/2021) and display 1) the original value in the table, 2) the variance of the value based on the previous month. 

For example, in the slicer, the month is 1/2/2021, the value of Cost of 1/2/2021 will subtract the value of 1/1/2021 to display the variance. Subsequently, in the slicer, the month is 1/6/2021, the value of Cost of 1/6/2021 will subtract the value of 1/5/2021. I want to make it dynamic, values to be changed when different options are selected in the slicer. Is this possible?

Thank you!

[amitchandak]

@Anonymous , Assume this DD /MM format and you need a month before value. Use an independnet date table to select the date

Value =

var _max1 = maxx(allselected('Date1'), 'Date1'[Date])

var _max = date(year(_max1), month(_max1) -1, Day(_max1) )

return

calculate(Sum(Table[Value]), filter(Table, Table[Date]= _max))

[Anonymous]

@amitchandak thank you!

What if the criteria now is I want it to calculate the variance of 2022 and 2021. How do I do it?

[v-yiruan-msft · Accepted solution]

Hi @Anonymous ,

I created a sample pbix file(see attachment) for you, please check whether that is what you want.

1. Create a single year dimension table as below(Do not create any relationship with your fact table)

2. Create a measure as below:

variance of years = 
VAR _selyear =
    SELECTEDVALUE ( 'Years'[Year] )
VAR _selcountry =
    SELECTEDVALUE ( 'Table'[Country] )
VAR _curyear =
    SELECTEDVALUE ( 'Table'[Year] )
VAR _selname =
    SELECTEDVALUE ( 'Table'[Name] )
VAR _preyvalue =
    CALCULATE (
        SUM ( 'Table'[Value] ),
        FILTER (
            ALLSELECTED ( 'Table' ),
            'Table'[Year] = _curyear - 1
                && 'Table'[Country] = _selcountry
                && 'Table'[Name] = _selname
        )
    )
RETURN
    IF (
        _curyear >= _selyear - 1
            && _curyear <= _selyear
            && NOT ( ISBLANK ( _preyvalue ) ),
        SUM ( 'Table'[Value] ) - _preyvalue,
        BLANK ()
    )

If the above one can't help you get the desired result, please provide some sample data in your tables (exclude sensitive data) with Text format and your expected result with backend logic and special examples. It is better if you can share a simplified pbix file. You can refer the following link to upload the file to the community. Thank you.

How to upload PBI in Community

Best Regards