Excel offers several easy ways to calculate expiry dates. This post explores different ways to automate expiry date calculations in Excel.

This post will show you how to calculate the percentage difference between two numbers in Excel. using this formula you can find percentage difference easily.

One of the many features of Excel is being nosy. That's right, you can quickly calculate a persons age as long as you have their birth date.

The starting point is the price information for each date on which you're producing an average. First, calculate the difference between the two prices for each date.