How much dark matter is there in the universe?

In cosmology, dark matter refers to those substances that do not emit any light and electromagnetic radiation. At present, people can only know that there are a lot of dark matter in the universe through the action of gravity. The earliest evidence of the existence of dark matter comes from the observation of the rotation speed of spherical galaxies. Modern astronomy studies the gravitational lens, the formation of the large-scale structure of the universe and the microwave background radiation. At present, what we know accounts for only 4% of the universe, dark matter accounts for 23% of the universe, and 73% is a kind of dark energy that leads to the accelerated expansion of the universe.