if you have access to the source file, you can link a table or graph in Excel to your PowerPoint slide. If the data in the worksheet is changed, it is automatically updated.

As two peas in the same Microsoft Office Suite pod, PowerPoint and Excel were built to work seamlessly with each other, including giving users the ability to cut from one and paste right into the ...

Therefore, using Excel to first create your charts and then importing them into PowerPoint allows you to create presentations with chart data that is more accurate.