MAT Calculation

[Anonymous]

Dear all,

I'm totally novice using the DAX. I would like to calculate a MAT value from the today (ex. we are in P7) over the last 13 periods.

We will make P7 2021 - P72020

Years	Periods	% Grade A
2021	P07	87,59
2021	P06	86,78
2021	P05	87,06
2021	P04	87,37
2021	P03	86,17
2021	P02	86,82
2021	P01	86,9
2020	P13	86,64
2020	P12	86,81
2020	P11	85,87
2020	P10	87,58
2020	P09	87,21
2020	P08	86,02
2020	P07	86,44

In this case result is => % diff = 1,15 %

Should appear like this for the actual period (P7) (% is wring in this example):

And I would like to make a graph with the calculation:

% Grade A is calculated like this:

Percentage = DIVIDE(CALCULATE(

COUNTA('rclms_qa'[CONFORMITY]),

ALLSELECTED('rclms_qa'[CONFORMITY])

),CALCULATE(

COUNTA('rclms_qa'[CONFORMITY]),

ALL('rclms_qa'[CONFORMITY])

))*100

Thanks a lot for your help,

Hervé

[v-kkf-msft · Accepted solution]

Hi @Anonymous ,

Try the following formula:

Measure = 
[% Grade A] - CALCULATE(
                [% Grade A],
                FILTER(
                    ALLSELECTED(rclms_qa[Years]),
                    rclms_qa[Years] = MAX(rclms_qa[Years]) - 1
                )
            )

If the problem is still not resolved, please provide detailed error information or the expected result you expect. Let me know immediately, looking forward to your reply.

Best Regards,
Winniz

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

[Anonymous]

Great - it works. Thanks @v-kkf-msft