Can anyone explain the calories face?

Hi I've noticed a lot of the faces fill up to targets for example steps go round till you reach it. However what is the calories face counting round to because I have no target. And how do I adjust this if there is a target?

Here's an example when I had a lazy Saturday sat on my ass and irs gone round clockwise a small amount on the target circle. 

But what's it counting round to. The 1705 is total calories I know that. Thanks in advance for any insights.