Is 85% in 3rd year doable

So I do Economics, just got my results back for 2nd year, after a terrible year, im pleased to say the worst has been avoided (definitely returning next year, and a 1st is still possible) but in order to get a first I need to get 85% in my FInal Year.

Do you think this is doable, do you know anyone else who has got this score or higher in their final year?

I didn't really focus on study in 2nd year, but next year almost all of those worries should be gone, so i just want to know, if someone studies really hard in final year can they get that level of grade is it realistic. I got around this level in A levels