You can sort based on any criteria on Sort tab. a simple way to show the details would be to do a fast change option to see the numbers. This allows the user to toggle to the table with the data rather than the bar chart. This is achieved by selecting both the Bar Chart and Straight Table as allowed Types in Fast Type Change.
Once you set that, then in the Caption of the chart object is where the Fast Change option will appear to toggle between the different chart types you selected as possible...
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