There's no universal ratio here, whatever rule of thumb you've heard about hours of editing per minute of finished audio. The real answer depends on what job the piece is actually doing. A tightly structured documentary segment often needs heavy shaping to hold together. A conversational, hangout-style interview show usually wants a much lighter touch, because part of what people are there for is the unfiltered, unpolished feeling of two people actually talking. The amount of editing should follow the format's job, not a fixed formula applied the same way to everything.