Create a new data table using
Tables==>Split
Selecting ODStatus as the Split variable and
Selecting N Rows as the Split Columns
You should also Select MembraneLot of Just ........ as the Group column
In the new data table you will now have a Fail and a Pass column, which you can then create a New column and using a formula of
:Pass/(:Pass+:Fail)
to create your % value
Jim