DAX functions in CALCULATE

[rpul]

@v-sihou-msft

I have been trying to carry out a calculation comparing previous years, but whenever I use a DAX function, such as PREVIOUSYEAR, as a filter in CALCULATE nothing gets returned. 

My current expression is:

Difference = CALCULATE(SUM('Yearly Summary'[Sales by Status per Year]), PREVIOUSYEAR('Yearly Summary'[Date].[Date]))

But this returns just blanks. Any idea why this may be or ideas for trouble shooting? If I drop the filter, it works. If I try other filters that are not DAX functions such as 'Yearly Summary'[Date].[Date]=2017 it works.