Thread: Pivot table

So I have a pivot table of USA which rolls down from Country> States> County> Cities and the data displays the count of top sold products such as
1) books
2) bikes
3) electronics
4) the rest of the products.
What I want to achieve here is see te percent of each product of the total products sold in the country of USA.
For eg at the country level lets say:
bikes-20% books-20% electronics-40% other products-20%
So essentially the percentages can be seen when one rollls down from Country> States> County. But I do not want to see any percentages at the Cities level, which is the lowest level in pivot table. You cannot drill further down the Cities level.
I just want the percentages to be seen at the Country level,State level and County level.
Does anybody know how to do this?