Measure no, but only engineers care about that (and I'm not even saying that they're right, engineers care a whole lot too much about hard data). You can show alternative solutions, estimate, make assumptions, even make up numbers and boom, you have "data" to show you improved things. You don't even have to lie: you can be very open that these are assumptions and made-up numbers, that it's just a story, what's important is that people come out with confidence that thanks to you, things are better by a bit/a lot/enormously.