how to get last 12 months from today's date ?

I want to create a chart in which I want to show a measure(profit %) that is already calculated, but the problem is I want to show it as line chart on the basis of last 12 months.

I have a column in database that contains all the date(Master table).  I am getting date of last year like this:

Last 12 months date= (DATE(YEAR([today's_Date]),MONTH([today's_Date]),day([today's_Date])))-365

that is giving me 2 feb 2016 12:00:00 AM

next I am doing

Last12_Now = DATESBETWEEN(TIMESHEETANALYSISCUBE[TRANSDATE],[Last 12 months],[today's_Date])

but it's not working.

so basically I want to show that measure (profit %) from feb 2016 to feb 2017.

How to do this in Power BI using DAX ?

Thanks for your time.