Type 10 in cell A2 and 12 in cell B2. Enter the formula 250-200 in the fx bar then press the Enter key. Now that you are comfortable with basic arithmetic formulas lets try something harder.
Select Average from the list to place a blank copy of the function in the cell.
You will use this sheet to enter sample data that demonstrates markup percentage formulas. It essentially segregates the data points into 100 equidistant segments. Within the Paste Special Dialog Box we navigate to Paste and mark Values. Launch create a new sheet.