The sentence "My interest in science has been somewhat newer." is what comes off rough. Newer compared to what? You could try to more easily transition from the last topic with something like this "Alongside my interest in making society better, I discovered an interest (or passion) in science." Then briefly describe what brought you into science before you list off your accolades.
You'd also do well to explain why you're interested in Economics and not just something like robotics where you could also leverage your science knowledge. Do you think that you could help better predict economic trends and stave off economic hardship? Or do you just really get a hard-on when you see an indifference curve?
You've got some impressive awards and accolades, but the one thing that might help you more is the "Why". More about your personality and what brought you to that point.
Your closing statement is a little lackluster and sort of a run-on. Something a little simpler and to the point might be a bit better. "My drive, passion, and skills will enable me to excel at this university and apply all I learn in my future career."
Still it was pretty damn well written and best of luck!
If you are trying to get into economic cybernetics, you might want put a bit more into your economic background if any.
