Why is reward going down?

Het guys just a quick question.

Why is my vote only 30 cents at 100% when it was 36 cents before at 100%? Is it because of steemprice at the moment of voting?

And why are rewards of posts going down? Is this the same reason or does downvotes have something to do with it? Can you check how much downvotes a post has had? If you know anything about it pls make a comment.

I also heard somerhing about when rewardpool is realoczted to more or other users.

Thanks for your time!