What exactly do you need to highlight the change for? I'm just thinking out loud here but when I am doing accounting work and I change a number, I already have foresight of what's going to change as a result. Are you running scenarios? I mean, are you changing this number and trying to see what input yields a certain result? If so, use goal seek under what-if analysis. If you're running multiple scenarios, I would create a data table.
Brian you and I were on the right/same page I was just being a dick, sorry.