Inconsistent activity data on Apple Watch

Hi. I wonder has anyone else noticed this inconsistency on their Apple Watch since installing Watch OS3.
I have the Activity complication on the Simple Watch face, and also have the Activity Analogue Watch face active, as OS3 allows multiple faces that you can swipe between.
Right now, the Activity complication on the Simple face is showing numbers as 36%, 13%, and 58% for today so far. But the numbers on the Activity face are 35%, 11% and 56%. It's not a huge difference but they're always slightly different like this and it seems strange.
The watch Activity app itself appears to agree with the first set of numbers.
To add more weirdness, the Activity app on the iPhone is showing much different and higher numbers.
Has anyone else seen this or understood it?
PS Am I right in saying the Activity app on the Watch used to give more information?