How to Calculate Percent of Weight Loss

The number of pounds you lose is important in determining the effectiveness of you exercise or diet program. The best number for determining effectiveness, however, is the weight loss percentage. The weight loss percentage is more important because it's much easier for a heavier person to lose a large number of pounds than in is for a lighter person. You can calculate your weight loss percentage yourself, with either a paper and pen or a calculator.

Things You'll Need

• Calculator or paper and pen

Show More

Instructions

• 1

  Determine your starting weight. Weight loss percentage is calculated based on your original weight.

• 2

  Determine your current weight. Subtract your current weight from your starting weight to determine your total weight loss, or total pounds lost.

• 3

  Divide your total weight loss (total pounds lost) by your starting weight. Your result will come out as a decimal; multiply the result by 100 to determine your weight loss percentage.