Normally it will try to verify up to 6 times before giving up. Either there's lost info or the file at its origin is corrupt which might be as little as a single bit or byte.

You'll probably find it's a one in 10,000 & won't happen often again. You might want to downld from another source instead & delete that one. If it's a movie then 2% will probably only mean the credits at the end. You can probably play it.