@StaceyCornelius I absolutely wouldn't rely on this research, or risking giving the impression that "only 3.5% will do". No, we need way more.
After reading A LOT of research on #tippingpoints & #socialchange, I trust Damon Centola's #networkdynamics research which set the threshold at 25%. Here is a very quick video, but I would recommend reading "How Behavior Spreads: The Science of Complex Contagions"
https://www.youtube.com/watch?v=qhY2y__43z8
PS: 25% #handsoff is well within reach.