A consultation agency sells consulting hours. Every hour of consultation is carried out by a subcontractor of the company. The consulting agency wants to make a profit of 100% on every hour sold.
Cost of sales
If an hour of a subcontractor costs 50$ and we want to make 100% profit on this hour, then we must sell each hour 100$. The cost of sales is then 50%, which means that for each hour sold 100$, it cost the company 50$.
Your cost of sales is 50.00% of the sale price.
Warning: if your consulting hour is carried out by an employee of the company, your cost of sales should be 0%. Indeed, the cost of the employee shall not be considered in your cost of sales because it is already budgeted in the menu "Employees".