% not adding up when using YTD

[Anonymous]

Hi All,

I have two measures;

Att YTD2 = CALCULATE([Overall Att rate],DATESYTD('dimDates'[Date]),filter(dimDates,dimDates[DateId]))

Overall Att rate = [Present Att]/[Total Session Count]

But they both report different results, I added the filter on the ATT YTD2 as I could see it was including everyday in the calendar and not taking into account weekends and holidays, does it still calculate over 365 days regardless?

       overall              ATT YTD

Is there another way to calculate YTD or is there anything else to consider when using YTD?

Many Thanks

Andy

[amitchandak]

@Anonymous , YTD should be like

Att YTD2 = CALCULATE([Overall Att rate],DATESYTD('dimDates'[Date]))

and dimDates should be marked as a date table

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[Anonymous]

it still calculates the same value without the filter, i added the filter in the hope that was the issue as we only work on acedemic years and dont want to count non school days.

DimDates is marked as a date table

We 

[v-yanjiang-msft]

Hi @Anonymous ,

According to your description, you want dates not including weekends, here’s my solution.

1.Create a new date table.

2.Use the date table to calculate.

Or you are still confused about it, please provide me with a sample and the output you expect.

About DATESYTD function, you can refer to the following blog:

https://docs.microsoft.com/en-us/dax/datesytd-function-dax

Best Regards,
Community Support Team _ kalyj

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

[Anonymous]

The question is more around what is YTD doing to my measure?

my assumption was that YTD was including non school days,  weekends holidays etc and rounding the numbers over the extra days.

I have selected last year 

When I put the overall measure in a line chart by month it reports the same calculation as the YTD measure.