Drake has the whole October to smash for that Hot 100 #1 until the last week as Ariana is returning on the final week and Adele will OWN November and the rest of the year!
US
47 Little Mix Black Magic
49 Demi Lovato Cool for the Summer
How?
I have no idea why Black Magic is in the top 50. Its poor callout scores and poor on-demand streaming seem to indicate that the public is not here for the song.
CftS's sharp decline is due to the fact that summer is over and no one wants to buy a summery song during fall. We knew in advance that it would drop off pretty quickly after Labor Day, especially considering that it was an airplay-fueled hit (these drop more quickly on sales than well-rounded hits; see Summer by Calvin Harris).
It's really good.
It's back to where it was even without the discount 
Tori and Nate could never
Queens. I hope this is a Gold top 5 single for them!