How come my rating went down?

 
Hi, I don't know what happened but my rating has decreased ? is it possible? what I have done wrong??
 
The rating is calculated/re-calculated in automatic way.
If decreased so it may be some your posts were deleted, or blog post deleted, Freelance, signals, charts ... anything.
Check Achievements in your profile.
 
Sergey Golubev:
The rating is calculated/re-calculated in automatic way.
If decreased so it may be some your posts were deleted, or blog post deleted, Freelance, signals, charts ... anything.
Check Achievements in your profile.

Thank you sergey... It is really weird...