What do you think is most important to losing and maintaining weight loss?

Question

Hello,
 
What percentage of weight loss and maintaining that loss do you attribute to your diet and what percentage to your exercise routine?  Is either more important than the other overall?  

 
Thank you!!

I didn't find the right solution from the Internet.

Reference http://www.medhelp.org/posts/Exercise--Fitness/What-do-you-think-is-most-important-to-losing-and-maintaining-weight-loss-/show/2989207

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