Download Percentage Weight Loss Formula Background. The following formula can be used to calculate weight loss as a percentage. Be careful when you're making comparisons to ensure that you're comparing negative (weight loss) to negative results and positive.
Calculating profit percent and loss percent.
This formula tells excel that you want to make the difference between cells b2 and a2 a percentage. Body fat percentage is the percentage of your body weight that's fat. Determine your body fat percentage with our body fat calculator. Say you've started at 100kg and now are at 80kg you've clinically important weight loss is generally defined as loss of more than 5 percent of usual body weight over 6 to 12 months 1,2.