Weight Reduction. A reduction of calorie intake by 500 to 1000 calories a day will lead to 0.5 kg weight loss per week. Ideally, one will lose between 2kg to 4kg of excess weight per month. You are recommended to lose 10% of your current body weight within 6 months. If you reduce more than 10% of your body weight within 6 months, you will have: .

how to lose weight from 100kg to 80kg