There’s a new clown in charge at the box office. As Warner Bros.’ ‘Joker: Folie a Deux” is spiraling down the charts with a stunning 82% drop from its $37.8 million opening weekend, Cineverse/Bloody Disgusting’s “Terrifier 3” has parlayed the infamous Art the Clown’s growing fanbase into the horror series’ first No. 1 opening.