Why I am getting low Payout????

I am not a whale or not very expert user at Steemit.

I was using steem a month ago and just came back 7 days ago but now when I am getting my payout in the form of rewards, it is not the same.

You can see I should be getting SBD and Steem worth of $8.10, but when I checked in my account, I am not getting the same amount.

I checked it on Steemnow.

I am getting SBD of same amout but steem power is very low.

Why is that? This was not the case a month ago.