If you're mainly sedentary, what should your calorie range be?

I switched from flying around a lot, to now just staying in one office/staying at home and I'm incredibly sedentary - 12 to 15 hours in a day, and then sleeping.

I've still been doing 5 workouts a week and following FB plans, but I've noticed that I'e been gaining weight since I'm eating the way I did while flying - so I drink lots of coffee and tea, as well as eat wraps and a fair amount of cookies.

I know that I need to decrease the amount of sugar I take, but I'm also wondering what my calorie range should be - it used to be 1300 when I was sedentary ( 5 ft tall woman), but it's probably closer to 1890-2100 now.