I don’t think there’s anything wrong with the formula. Have you changed the chart value properties to display as decimals or percentage? That has happened to me before. Also, you could check the scale of the chart - do you have it set to auto scale or have you manually entered values for the scale?
If you add a spreadsheet table to see your formulas in preview mode, you will see that they are not resolving correctly, and this is why they do not display.
I have broken down the matching of the 2 columns to simplify matters and get the chart to display. I have attached an example of how I did this. When I tested it, it works for me - let me know if it works for you.