Adding a new column to either an entire spreadsheet or just a portion is an easy thing to do in Microsoft Excel. Here's how.

Excel Calculated Columns TL;DR Key Takeaways : Excel 365 offers a feature called calculated columns, which allows for dynamic calculations that automatically update with changes in data.

If you have a lengthy column of numbers that you need to multiply by a percentage, Excel includes tools to instantly apply the product to the entire range of cells in the column.