To display percentages in a bar chart over the total number of users in Mixpanel, you can use the "Compare to Overall" feature. This allows you to compare each segment value and see what proportion it makes of the overall value. Here's how you can do it:
1. Create your bar chart in Insights with the desired metrics and breakdowns.
2. Click on the "Compare" button in the top menu.
3. Select "Overall" from the dropdown menu.
This will show each segment as a percentage of the total, effectively displaying the percentage over the total number of users.
For more details on this feature, you can refer to the Mixpanel Reports Overview documentation.
Remember that the exact appearance and options may vary slightly depending on your specific Mixpanel plan and version.