While the majority of people watch Westworld via streaming platforms, the total number of viewers was down from a 13.2 million average in Season 1 to around 10 million total viewers across platforms in Season 2.
Still, even if the numbers were down a bit, it was certainly enough for HBO to sign on for Westworld Season 3.
Westworld had a gigantic first season, but there were 18 months between the start of the first season and the start of the second.
In that time, Westworld did shed a minor number of viewers.