What you want to do is probably not too difficult, but it's not clear to me what exactly you're after. It looks like the order line numbers are either 0% or 100%? Is line number the level of detail? Or can can some line numbers be partially delayed? Do you want to calculated the % of line numbers that are late per order? Or the total number of orders that have late items?
Perhaps you could post a subset of the data (obfuscated if necessary) in a packaged workbook (twbx) that shows the problem. Someone should be able to quickly point you in the right direction.
For the most part it will either say 100 or 0 percent. the line number is the level of detail so I would like to be able to filter by detail or overall order to get an overall % on time. An order should not be considered on time unless all of the individual lines in that order were fufilled on time. I believe I already have the % on time by the line item calculated.
I am still unsure of the desired outcome as well. Do you want only ORDNUMBER on the rows shelf with the aggregated percent of each, based on the ORDDTLNUM? Can you post a packaged workbook (twbx file)?