https://ourworldindata.org/data-insights/almost-all-livestock-in-the-united-states-is-factory-farmed
Estimates are still quite high globally too. Around 94% of all globally farmed animals are factory farmed. 74% of all farmed land animals are factory farmed and virtually all farmed fish
Since you asked that made me actually reverse image search it to double check it was originally where I thought it was from. It was not, and now I am not sure where exactly it's originally from. The oldest version I found was from a blog from 2008, but on that post the file metadata says the photo was from May 11th, 2004