Looking for the source (dataref?) of the TRQ% indication

[12RomeoCharlie]

I am building a Fly With Lua HUD and have everything working as desired, but struggling to find the source (or means to calculate) the TRQ% indication in the MFD. I've tried all sorts of calculations (e.g. engine torque divided by  max torque, etc being careful to normalize metrics) but failing.  Any thoughts?  (TBM900 1.1.13)  Thanks.

[Ch.Cole]

I built something with

DataRef("Torquenm", "sim/cockpit2/engine/indicators/torque_n_mtr","readonly",0)

and

imgui.TextUnformatted("Torque : " .. math.floor(Torquenm/30) .. "%")

I just did some checks:

The dataref-formula and the MFD match at values > 35%
Lower than that, the dataref shows a lower value
10/16
20/25
30/32

Edited June 13, 2022 by Ch.Cole
Checked it...

[12RomeoCharlie]

Thank you.  I am currently using a poorer surrogate, "sim/flightmodel2/engines/throttle_used_ratio" and seeing similar behavior.  The "torque" dataref is a better starting place, so I will play with that.  Perhaps with some math or table lookups to calibrate the reported TRQ% indication at the lower power levels.  Not sure where the fancy math is being performed by the aircraft to provide the reported torque.  Appreciate the response.