Note: you must have Excel on your computer in order for this to work.
To update a chart:
- Open your presentation.
- Click on the chart you would like to update.
- Hold down the Control (Ctrl) key and click on the chart.
- Select the option Edit Chart.
- Excel will open with the chart.
- Make the desired changes and save.
- These changes will automatically be applied to the chart in PowerPoint as well.

