Another issue is --

I have one formula which shows the percentage according to gross we just calculated above. I used this formula to show percentage of gross.
shared numbervar rtTotal;
local numbervar thisTotal;
thisTotal :={dt_VU_GETMSG_SERVICE.TOTALAMOUNT_} % Sum ({dt_VU_GETMSG_SERVICE.TOTALAMOUNT_}, {dt_VU_GETMSG_SERVICE.FSERVICE_NETWORK});
rtTotal :=rtTotal+thisTotal;

and created a new formula for displaying the summary like this
shared numbervar rtTotal;
rtTotal;

but on my report it keep adding the record in the next field.
For Eg:

Details:
Name Percentage
ABC    20%
XYZ    29% ---> Original Value 9%
DFG    31% ---> Original Value 2%

At the end on group footer it shows 31%(last value).

I want to sum all the percentage field on details and show them on group footer.How can I achieve this?

Thank you