New things were dropped so 4.36% either way until the new season.
To OU:
Nothing
To UU from OU:
Venusaur
Empoleon
Shaymin
To UU from NU:
Magneton
Druddigon
To NU from UU:
Scrafty
Golbat
Sharpedo
Slowbro
Why should or shouldn't any of the things on this list move? This is the place to say. Stay on topic.