Calculation in Pivot

I'm getting a too many records error when making a calculated item.

So in the row I have divisions and in the columns I have years.
Then I have 2 amounts in value.

Now I want the calculated item to substract the 2 years (2017 - 2016) for bot values.
Or even from 1 valuable would be ok, but also then I get the too many records to complete.

Is it purely my big database (I have over 150.000 lines) or is there something else I am doing wrong?

Ok to many records was not in the data.
I was too many records in the rows.

Had more than only division in the rows.
Using less fields in the rows "solved" my error.
Not really solving of course but I guess it is just a limitation I have to deal with.