How to Calculate Weight Percentage Lost

According to Medline Plus, "Sixty-six percent of adults in the U.S. are overweight or obese." A prevalence of obesity has also led to a greater focus on weight loss. If you are one of the many individuals who has been working on achieving a healthier weight, you might want to figure the percentage of weight that you have already lost. You can determine this information by applying a simple mathematical formula.

Things You'll Need

• Calculator

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Instructions

• 1

  Subtract your new current weight from your previous weight. For instance, if you used to weigh 200 pounds, but you now weigh 175, subtract 175 from 200 to get 25.

• 2

  Divide your answer from step one by your original weight. In this example, you would divide 25 by 200 to get 0.125.

• 3

  Multiply the answer you found in step two by 100 to calculate the weight percent lost. For instance, you would multiply 0.125 by 100 to get a weight loss percentage of 12.5%.