Cell update time elapsed formula

So I am trying to do two things in this and I am going crazy. My Google foo is weak.

The first thing I am trying to do is get the row to highlight when the sell percentage is at certain points. Let's say 150%, 250%, 400% or something like that. I know it is conditional formatting but

The second thing I am trying to do is when E2 is changed G2 starts a timer so to speak to tell when it was last update in hours.