I guess I wasn't clear: the percentages haven't been calculated before ther eport was run I think Cetin is correct: I'll have to do the calculation first, probably by a custom method of my business class, and store it either to the table itself in extra fields or, as he suggests, as report memvars.

Thanks to you both.

Jim

PS to Cetin: I viisited Izmir in 1998. Beautiful city!