Calculating a percentage in Excel is pretty straightforward! You can divide the part by the whole and then format the cell to show a percentage. For example, if you have the part in cell A1 and the whole in cell B1, you can use the formula =A1/B1 and then format the cell as a percentage. Do you often work with percentages in Excel, or is this a new task for you? I'm here to help with any Excel questions!