What regions hold what percentage of the world's population?
the more developed countries (mdcs) hold of the world's population, whereas the less developed countries (ldcs) hold of the world's population.

The more developed countries (MDCs) hold twenty of the world's population, whereas the less developed countries (LDCs) hold eighty of the world's population.

Explanation:

However, the given magnitude of percentage is of an approximate estimation. Development comes from education and ability of using resources properly. More developed countries work, manage and run their administration and affairs in a fine way, completely different from those less developed countries.Less developed countries basically lack resources and easy access to various things.