MDX Formula

HI,

Could you help me. I created a Report of the following form.


2005 2004
Sales 13000 12500
Variable Costs 9000 8750
Distribution Variable 1500 1423
Total Variable Costs 15756 14567
Variable Margin 12820 12000
% of Sales 591.69% 576%

But in order to obtain the colum for 2005 and 2004 I am using the following formula: Sum({Ytd()} ,[Versión].[Versión].&[1]). So when I try to obtain the row " % of sales" those % area acumulated too. When the result should be : 68.61 and 96%

What I need to do or what formula I need to use in order the % of Sales are not accumulated??? :

Thnx