How to add a visible percentage to the graphs-widgets?

I was building a Dashboard to tracking the process of each department and I created different graphs (widgets) that show me with numbers and colors the process of the shots or assets in each department, however I need to see the percentage and that is only possible when moving my mouse over the graph. I need that percentage to be always visible to make the reports faster . I have tried to search all over the site settings where to activate that but still nothing. I will appreciate a lot if someone could help me. Thanks