Calculate the difference between two values in your Microsoft Excel worksheet. Excel provides one general formula that finds the difference between numbers, dates and times.

Learn how to calculate the discount rate in Microsoft Excel, what the discount factor is, and how the discount rate and discount factor compare.

Your projections in Excel won't be useful or complete until you add additional formulas to calculate how your sales and expenses interact and play out over time.

This is where the number-crunching fun starts. Learn the ins and outs of the logical formulas that represent the heart of Excel.