If you find yourself making the charts for your presentations in Numbers and would like an easy way to update them, the chart updating feature in Keynote does just that. With a simple click, your chart in Keynote is updated to reflect changes made in your Numbers spreadsheet.
This feature requires that you start your workflow in Numbers. After creating a chart, copy and paste it over to a slide in Keynote.
Now, whenever you click on the chart in your Keynote presentation, a button will appear atop of it.
Clicking on the arrow with the two circles on it will update the chart with figures
