RE: See Profit % By Line On Sales Order
The actual price will only be know to the system once the Sales Shipment is posted, and Outbound Item Ledger Entry is applied to Inbound entry, and the process "Adjust Cost - Item Entries" has been finished (either run manually or if Automatic Cost adjustment is turned on in Inventory setup then at time of posting the shipment).
So until shipment is posted, system could try to calculate approximate profit based on last purchase cost.
As Rahul mentioned - in the FactBox there is a field that shows this Profit field from the Item Card - but it works if You have fixed price for item in the Item card.