What is the formula used to calculate the Biggest Loser weight loss?!

Question: When they are doing their weigh ins they show the weight and than the percentage of weight loss. How do they calculate that?

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Answers: When they are doing their weigh ins they show the weight and than the percentage of weight loss. How do they calculate that?

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Suzy weighs a hundred pounds. She loses twenty pounds. She weighs eighty pounds. You take the weight loss and divide it by the starting weight. .2 You covert it into a percentage. 20% weight loss.

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