Hi @backdoc-sympatic,
The P&L report does not have a built-in option to display a % of Sales column directly. It only supports adding columns for % of Row, % of Column, % of Expense, and % of Income via the Compare feature.

However, you can export the P&L report to Excel and manually add a % of Sales column by calculating each line item's percentage based on total sales.
Alternatively, you could run the Sales by Product/Service Summary report, which can show you % of Sales on a per product/service basis.

If you have additional questions, feel free to hit the Reply button below.