Unless you remove a limb that's not going to happen. The safe and high-end amount of weight to lose is 1.5lb a week. And how you go about doing that depends on your health and habits.
Try to eat plenty lean meat,chicken breast and fish,eggs,fat free greek yogurt. Protein makes you full so quick. Low Carbohydrates diet.Plenty fruit and non starchy vegetables,drink plenty water.Obviously avoid take aways and sweets.You can also try 7 day soup diet.You can find a recipe online.It has been created by a doctor for obese patients.It is safe to follow for 7 days and you can loose weight.
I would say it totally depends your diet plan and exercises that you are going to have it's better to eat less and exercise more to get fit by losing weight..