dynamic fx:
=ARRAYFORMULA({TRANSPOSE(QUERY({A1:C}, "select sum(Col3),Col1 where Col1 is not null group by Col1 label sum(Col3)'Base Pie'"));
{"♀", IFERROR(1/(1/TRANSPOSE(MMULT(TRANSPOSE(IF(SEQUENCE(COUNTUNIQUE(A2:A))<SEQUENCE(1, COUNTUNIQUE(A2:A)),
QUERY({A2:C}, "select sum(Col3) where Col1 is not null group by Col1 label sum(Col3)''"), )*1), SEQUENCE(COUNTUNIQUE(A2:A), 1, 1, )))));
QUERY(QUERY({A2:C, ROW(A2:A)}, "select Col2,max(Col3) where Col3 is not null group by Col4,Col2 pivot Col1"), "offset 1", )};
{"♂", IFERROR(1/(1/TRANSPOSE(MMULT(TRANSPOSE(IF(SEQUENCE(COUNTUNIQUE(A2:A))>SEQUENCE(1, COUNTUNIQUE(A2:A)),
QUERY({A2:C}, "select sum(Col3) where Col1 is not null group by Col1 label sum(Col3)''"), )*1), SEQUENCE(COUNTUNIQUE(A2:A), 1, 1, )))))}})
the formula takes data in A:C range and creates all necessary steps, columns and rows that will feed pie charts.
rows labeled ♀♂ serve as pie chart ratio correctors
column E can be used as a subcategory labeling system if needed
in the same manner row 3 can be used as labels for base pie
first, we create a base pie chart (from the black row) which will serve as background:

- next, for each colored column we create a separate pie chart that we overlay on top of the base pie chart. note that colors and sub-colors needs to be selected manually for each slice by double-clicking a given slice and selecting either color or none in the case of
♀♂ slices








and repeat for the next column...
