Countif

Hi,

I am not sure how your semantic model looks like, but I tried to create a sample pbix file like below.

Please check the below picture and the attached pbix file whether it suits your inquiry.

Calculated column expected result =
DIVIDE (
    1,
    COUNTROWS (
        FILTER (
            Data,
            Data[DEL Delivery reference] = EARLIER ( Data[DEL Delivery reference] )
        )
    )
)

It worked just fine. Thank you very much for the prompt help. Best Regards