Pie Chart tool-tip is not working as expected

Problem:
I'm making a circular progress chart for showing a how much a user has paid compared to their total balance. In this example, your tool-tip doesn't work as intended. When you hover over the graph, the tool-tip says "created" on both sections.

Solution:
The reason why the tool-tip doesn't work as intended in your example is because the '%node-index' token('%i') doesn't work for the Pie chart type. Pie charts have only one node per plot so you would need %plot-index or %p instead of %node-index or %i. Please use this demo for reference.