Build Rank

[Sam85]

Hello,
I got a question. I Use this Measure to Create a sum dependend on Jahr and Kto-Nr.
Now I want to build in a rankx or rank.eq dependend on Jahr and Umsatz. How can I do something like that?
Thanks for any help.

=CALCULATE    (
                SUM(source[Umsatz]);
                Filter(source;source[Jahr]=EARLIER([Jahr]));
                Filter(source;source[Kto-Nr]=EARLIER([Kto-Nr]))
                )

By the way is there a code tag for DAX or M?