Thanks for your comment.
We think that meteorites like the one shown called PAT 91501 were part of asteroids that were hit by debris from the collision that formed the Moon around 4.47 billion years ago. It was thrown out of the asteroid belt by another impact within the last 100 Myr which tossed it inwards towards Mars and Earth. Some fragments from impacts in the asteroid belt are thrown out and hit Jupiter but some of the material thrown inwards will eventually hit Mars, the Earth (or Moon) or Venus. The rest goes into the Sun.
Hitting the Earth from the asteroid belt is more likely than hitting a golf hole in one in Florida because any small body orbiting the Sun closer than the asteroid belt will have an unstable orbit. After a few million years orbiting the Sun, it may come close to Mars and get nudged inwards again, or outwards. So it isn’t a straight shot at Earth! It takes a very long time.