Why Rayquaza's Stamine is different?

With the new HP formula, I noticed that Rayquaza's STA doesn't match with it.

~ New STA formula:
Floor(HP * 1.75 + 50)

~ Rayquaza's base original stats:
HP - 105
Attack - 150
Defense - 90
Sp Attack - 150
Sp Defense - 90
Speed - 95

~ Gamepress new Rayquaza's base statistics (look at the STA):
ATK - 284
DEF - 170
STA - 213

~ But if you apply the formula... (look at the STA):
ATK - 284
DEF - 170
STA - 212

I've tried several Pokémon, but for now only Rayquaza has that error. Can someone tell me where the error is? Thanks.