If you are using Microsoft Excel to manage numerical data, at some point you're inevitably going to display percentages. Doing so can give you a new insight, or make summarizing heaps of data a bit ...

This post explains how to calculate Weighted Average in Excel with percentages. In a standard arithmetic average where the sum of values is divided by the number of values, each data value is treated ...

Finding percentage change in Excel requires calculating the difference between two numbers, dividing that difference by the successive number and changing the decimal value to a percentage. In case of ...

Excel's GROUPBY function lets you group and aggregate data based on certain fields in your table of data. It also offers arguments that allow you to sort and filter your data, so you can tailor the ...

"Return on investment" is a financial calculation used to gauge how well the money you invest earns you even more money. To calculate ROI you divide the earnings you made from an investment by the ...

Using Excel's number format tool means you can ensure your spreadsheet both looks the part and handles your data exactly how you want it to. In this article, I'll explain what each number format is, ...