According to the wikipedia page of the DSV Limiting Factor[1], "Over 21 people have visited Challenger Deep, the deepest area on Earth, in the DSV". This is just aboard the Limiting Factor, and doesn't include the descent of the Trieste (2 people), Deepsea Challenger (1 person), and Fendouzhe (3 people), totaling at least 27 who have been to the Challenger deep.
It looks like now, at least 3 more people have been to the Challenger Deep than have been to the moon (24 orbited it, only 12 landed on it).
It looks like now, at least 3 more people have been to the Challenger Deep than have been to the moon (24 orbited it, only 12 landed on it).
[1]: https://en.wikipedia.org/wiki/DSV_Limiting_Factor