MY REPUTATION SCORE REDUCED ABNORMALLY.

Hello Steemit,

Prior to my last post, my steemit reputation score was at 30, only for me to login to my account today to try and post a content on my Steemit blog, and it turns out my reputation has reduced from an initial point of 30 to a low deep of 11.

Can someone knowledgeable enough about how this works explain to me what has happened to my account or what could have triggered the decline of my reputation point?

Thanks.