Add Percentage % Change YoY for Mixed Series Charts

What is the problem or goal the end user is trying to solve or accomplish?

1. The user wants to see % percentage change across multiple series all within one chart, without having to view separate charts.

How are they solving it currently?

1. The user is calculating this on different charts.

What is the recommended solution by the Customer?

1. The end user is trying to calculate percentage change of a mixed series chart without having to be limited to this on single series charts