PowerPoint charts let you communicate data graphically. Use charts in PowerPoint to help see the meaning behind the numbers.
If you have already created a chart in Excel, you can import and link it to your PowerPoint presentation. When you insert an Excel chart in PowerPoint, any updates you make to the original Excel chart will automatically update in your PowerPoint presentation, as long as the files remain in the same location. This can be a convenient and time-saving feature for presentations that require frequent updating.
To edit an imported chart, double-click it to open the Excel placeholder. After you have finished editing, be sure to save the chart in Excel.
Once you have imported a chart, be careful not to delete or move the original Excel file. If the location of either the PowerPoint presentation or the Excel file changes, you may have to insert the chart again in order for it to display correctly.