Conditional formatting going crazy in matrix table with calculation group data and format function

Hi,
I want to show margin values with % formatting ofcourse and to make it happen with calculated group the only solution (correct me if I'm wrong) is to use FORMAT(x, "Percent"). But when I use FORMAT my conditional formatting is falling apart.

My conditional formatting rules in table

Calculation group conditional formatting rule

So when I don't use FORMAT function on "MARŻA" (MARGIN) it looks good (putting aside value formatting)

But the moment I only wrap the value around FORMAT() function it looks like this

If I add FORMAT to calculation group formatting rule like this

For some reason it only fixes 0 values

Negative values are still shown in green.

Any idea how to solve it?

I have no problem if I put the data the "normal" way without calculation group but I need to keep the values as calculation group since I need to be able to dynamically filter out columns from the matrix.