Acquiring GPU utilization % - possible?

I want to know the % utilization of the GPU. (Just approx., no need to be exact)

Is it possible to acquire this in a similar fashion to the system expression cpuutilization via Javascript or something else?

You could just open the task manager

Or the CPU% from the debug mode, seems to be the same value

GPU, Graphics Processing Unit, not CPU.

Also, this is for acquiring some additional info on remote client machines.

I think for the GPU you would need a tool like

GPU-Z http://www.techpowerup.com/gpuz/

MSI Afterburner http://event.msi.com/vga/afterburner/download.htm

RivaTuner http://www.guru3d.com/content-page/rivatuner.html

for NVIDIA with development-driver NVIDIA PerfKit http://developer.nvidia.com/object/nvperfkit_home.html