I am not strictly talking about the technique, but about Percival's ability to drain the life force of other races.We don't know if this is the same technique as the Behemoth's. As I said Percy has several other techniques in stock so it's a bit absurd to summarize him in one ability. And again he has already claimed that Worreldane surviving it was not surprising due to her having a non-human half.
I meant an full erasure of existence, that is to say, erasing even the soul. This kind of thing can't be handled with a standard healing.
I don't think Annihilation can erase the soul, but it should be able to disintegrate body parts. This would 100% kill if it hits the entire body, but it's not like something like this can't be avoided.