How to display value in use with total limited value

Grafana
1

I can get values from proxmox for memory in use. But I need to add total memory next to it.

from(bucket: "s1")
  |> range(start: v.timeRangeStart, stop: v.timeRangeStop)
  |> filter(fn: (r) => r["_measurement"] == "system")
  |> filter(fn: (r) => r["_field"] == "mem")
  |> filter(fn: (r) => r["object"] == "qemu")
  |> filter(fn: (r) => r["_value"] > 0)
  |> filter(fn: (r) => r["nodename"] == "s1")
  |> aggregateWindow(every: v.windowPeriod, fn: mean, createEmpty: false)
  |> yield(name: "mean")

Sample screen shot https://disk.yandex.com/i/vdSARYpXvp-siA