You are burning roughly 1500 calories per day doing very little (RMR-Resting Metabolic Rate) and about 2000 with exercise.
Based on a 20% reduction, that's 300-400 calories less daily, a safe and sustainable level for weight loss.
It will take you about 4 times longer, but it will be easier to adhere to and the weight might stay off, compared to
"crash" style diets which promise fast weight loss and most people end up heavier than before, following the initial weight loss!
Use your own RMR calculator for better accuracy (also accounting for activities and exercise), since the figures you posted seem to be very off.
Cut out the junk food, white processed carbs, sugar, sodas,fried foods and any unnecessary "empty" calories.
Make sure everything you consume is of high nutritious quality. Skip everything that is not!