Dax column calculation

[JCK2]

Hello,

i want to create a measure to arrive at one number as how much is due in the month, I wrote teh below calculation in column, however this is not helping me achive what i want.

How does this work in a measure?

Over due in the month = IF((' Audits'[Compliance Date]< ' Audits'[Date Audit Performed])||  ISBLANK(' Audits'[Date Audit Performed]) &&'SAM Supplier Audits'[Compliance Date]< TODAY(),1,0)

Also want to add an additional condition of Compliance date is No Null...

I want to further calculate % Completed on time...using this as one of input..

Thanks a lot!!