Firstly Find 10% Discount = cell_name * 10%
i.e E8 * 10% then Press Enter and Drag Till last value
After finding 10% Discount Find Sales Price Formula for Sales price is MRP – Discount = Sales_Price
Or You can Directly Find Profit Margin by using Formula
= (MRP – Discount) – Manufacturing_Price
i.e = (E8-F8) – D8
where E8 is MRP Price , F8 is Discount Price and D8 is Manufacturing_Price