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Old 07-26-2012, 04:06 AM   #1
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Join Date: Jul 2012
Posts: 106
Question Calculating % Lost

I have joined the 10% by Columbus day challange, but haven't been able to figure formula for % lost. I even asked someone with a bunch of math in her background, but we came up with some really funky numbers... Can some one please give me an algebra style formula so I can quit tearing my hair out?
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Old 07-26-2012, 04:55 AM   #2
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Location: Central Victoria, Australia
Posts: 76

(weight lost/original weigh) x 100 = % of original weight lost


(10lbs/200lbs) x100 = 5%

to work out what 10% of your current weight is simply divide your weight by 100, which gives you 1% of your weight and then times by 10 which is the percentage you want so say you way 200lbs and you want 10% of 200lbs

(200/100) = 2 (which is 1% of 200)

2 x 10 = 20lbs

so 20lbs is 10% of 200lbs
October 2011- Weight: 94.7kg (208.78lbs)
April 2012- weight 86kg
May-June-July 2012- weight: up and down between 86.5kg and 84.5kg -stuck stuck stuck
July 2012- Joined fitday!
27th July 2012- weight: 83kg (182.98lbs)

First Goal: 80 kg(176.37lb) (reached 21st August 2012)

I HAVE BEEN OFF THAT WAGON 19th Feb 2013- 84.7kg (186.73) time to get back on!!!!!

Healthy weight range Goal: 60kg-74kg
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Old 07-27-2012, 03:49 AM   #3
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Posts: 106

Thank you... We were trying current weight/start weight... It just didn't look right to either of us!
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