Add new column in Matrix visual with up or down arrow (comparison with previous month)

Anonymous 

Hope you have a dates table in your model and it is connected to your fact table. I used the Power BI sample data and created the expected results. The file is attached below my signature. 
You need to create a measure to evaluate the status and assign it to the CF logic.

DAX Formula to get the logic: 

Growth = 
VAR __SALES = [Total Sales]
VAR __PM = 
    CALCULATE(
        [Total Sales],
        DATEADD( Dates[Date] , -1 , MONTH )
    )
    RETURN
IF(
    NOT( ISEMPTY(financials) ) && __PM <> BLANK() && HASONEVALUE(Dates[Year Month No]),
    SWITCH(
        TRUE(),
        __SALES  > __PM ,1,
        __SALES  = __PM, 0,
        __SALES < __PM,-1
    )
)