I came to know that chartjs-plugin-labels is best to display percentage instead of count values inside angles or outside the angle but unfortunately no code snipped found for PrimeFaces JSF chartJs as shown in the following figure . enter image description here

barModel2.setExtender("chartExtenderPercentage");

after research I find that function barModel.setExtender("functionJSName) in ManagedBean which is to execute the JS function in the XHTML file.

The result obtained

Numbers and percentages I couldn't show

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