@taha13 refer to one of my older answers. Although this is for Column Chart the same can also be applied for Bar Chart to add a % after the values displayed in the chart.
https://answers.splunk.com/answers/598632/add-percent-sign-on-a-stacked-column-chart-data-la.html
Or my wiki talk Topic 7: Show Percent in Stacked Column Chart instead of Values and highlight Data Labels as White color thro...
@niketn my problem is that i don't have the acces to JS.So i can't use "highchart_data_label_percent"
@taha13, the only option otherwise for you would be to convert the Dashboard to HTML dashboard so that JavaScript Code can be applied within the dashboard. However, once Dashboard is converted from Simple XML to HTML:
1) A lot of Simple XML features will stop working.
2) HTML dashboard can not be reverted back to XML
3) Ease of Dashboard editing though UI will be lost
4) Editing HTML dashboard requires knowledge of Splunk JS and HTML, CSS, JS.
Since the feature is not available out of the box with Highcharts implementation, other option would be to use Custom Visualization API from scratch and build visualization using Highcharts. (Which would be even more time taking process)
Maybe you can derive a token based option to enable/display % display for specific table/s so that JavaScript once uploaded can be be applied whenever needed in all your dashboards within your Splunk App.
There isn't another solution?
I am sorry I am not aware of a built in option. Let me convert my answer to comment so that others can provide their input.
Okey ,thank you