Calculation based on the total of another panel

I have a panel that accesses data from Zabbix via the plugin, this panel combines multiple hosts CO2 usage to show a total.

On the same dashboard i would like to give some real-world comparisons of how else this CO2 could have been used. i.e equivalent miles travelled in a car.

So i’m effectively looking to divide the total of one panel for the result of another. Is this possible?

It sounds like you are wanting to do simple math on two queries, correct? If yes, see this post.