The best way to describe this without knowing Python or VB jargon is to add these screenshots. I would like to emulate this Excel calculation in ArcMap10.1. MEAS is the distance along my route and ET_Z is the elevation at the route vertex. I just need the difference from the next point down the line from the previous one.
I'm not sure the best approach to this, but figured that there may be simple Python solution for this. Thanks in advance!