How to create a new column using another two column values

[vipeesh191]

I have table like this below. Wanted to create a new column using the columns called free disk space and total disk space. For example first row free disk space shows 19.1 GiB and Total Shows 24.0 GiB
The new column should show like 19.1GiB/24.0GiB

Right now its displaying the calculated value using Binary calculation

[ebabeshko]

What is your datasource? It would be more appropriate to do it by its means.

Using Grafana’s transformation the closiest you can achieve is something like this:

[vipeesh191]

Using promethus

[ebabeshko]

Create necessary column using label_join