MRR Revenue Growth

Hello,

You helped me out previously (thanks a lot for this) when I needed to be able to track revenue by month / year but cumulating via start and end date of that revenue.  That is in the PBIX file in the folder linked.  In effect it looks like this:

MRR Revenue is when it was sold.

MRR Revenue2 sums up the revenue for each month after it is sold until it's end month.  It works well and uses this measure:

MRR Revenue2 = 
VAR MaxDate = CALCULATE( MAX( 'Date2'[Date] ) )
VAR MinDate = CALCULATE( MIN( 'Date2'[Date] ) )
VAR Result = CALCULATE(
	SUM( 'CMD Items'[MRR$] ),
    'CMD Items'[Completed Date] <= MaxDate,
    'CMD Items'[End of Term]> MaxDate,
    REMOVEFILTERS( 'Date2' )
)
RETURN Result

However now I want to take it a step further and split it out into years but still doing the cumulative start / end date effect.  Then I would like to add up them for a period (say H2) so that I can compare the two H2's and give me a percentage growth between them.  

I don't think I explained that very well so I have exported the data into excel and done in excel what I would like to do in PowerBi (also in the attached).

In effect I want to build a table based on the above using month rather than month/year and with a measure or something that just does a year in turn like this:

Then with those year measures I can filter by last 6 months on both and turn it into a growth percentage like so:

The problem is (i think) because I am removing filters from the date table to make the cumulative effect work I then can't seem to work out how to filter it by year after that.

Any help would be appreciated please.

Thanks and regards

Power BI