What is the difference between a harmful and neutral mutation

A harmful mutation will harm the organism, a helpful will help the organism to survive, and a neutral will not affect the organism.Lol I feel like a nerd

A beneficial mutation in an animal, plant, cell or bacteria will allow it to have a better chance of survival and allow it to continue passing on its DNA in its offspring. a harmful mutation does the exact opposite it hinders the animals survival and will eventually lead it's species to extinction.