Hi,
Where is this Net Sales, Cogs and Sales unit comming from?. are they measures in DB then you can select the same measures in row structure of your crosstab.
If they are something you need to do calculations, then try using Calculated Memebers in Crosstab. below video will explain you in detail.
Crystal Reports for Enterprise 4.0: Add calculations to a crosstab
Thanks,
Jothi