For the Iso you can usually divide by a 100 truncate and multiply by a 100 to snap to increments of a 100. Are you planning on using the built in radial dials or something custom?
You may need to use a map range clamp if you need the output for the progress bar / radial bar to be in the 0-1 range
A quick snapping for a slider bar (should translate to a radial easily)
