ASOsamp.Sample provides a formula on a member called % of Total. This member formula identifies the percentage of the Measures total that is produced by Transactions. The formula for % of Total:
Transactions/ (Transactions,Years,Months,[Transaction Type],[Payment Type], Promotions,Age,[Income Level],Products,Stores,Geography)
The formula specifies a member (Transactions) divided by a tuple (Transactions, Years, ...). The formula lists a top member from every dimension to account for all Transaction data in the cube; that is, not Transaction data for the Curr Year member but Transaction data for all members of the Years dimension, not Transaction data for months in the first two quarters but Transaction for all months, and so on. In this way, the value of % of Total represents the percentage of the Measures total that are produced by Transactions.