Ranking worsening after microdata
I started working few days ago with schema.org microdata (itemprop, itemscope, etc.).
I noticed that a blogpost I put the code on has worsened quite remarkably the Google positioning (from 25 to 60).
Is it normal (maybe because the algorythm is still processing the new info) or I made some sort of disaster?
Also, are microdata the proper way to have rich snippet?
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