control texture offset by camera y rotation?

View attachment 41269

I'm working on a compass dial that moves with camera y rotation but need help getting my math right.
I'm using a textured plane to show the reading. The texture is 1024 pixel wide, and the tiling on the plane 0.1

I got the numbers to move with the camera, but they skip right before getting back to 0 because I'm missing something.

This is what I have but I'm missing the tiling in the equation. The numbers scroll too fast.

Thanks for your help.

UPDATE: I found an asset that does that (ProCOMPASS: Compass, Minimap & Navigator)
https://assetstore.unity.com/packages/tools/gui/procompass-compass-minimap-navigator-194702