How much population does Rome lose?

Perhaps the best-known example of long-term urban decline is the "fall" of Rome, which took place between the second and sixth centuries AD. During this period, the city of Rome experienced a decline of population from around a million persons to about 30,000.

Rome, which took place between the second and sixth centuries AD. During this period, the city of Rome experienced a decline of population from around a million persons to about 30,000.

Explanation:

the answer would be logic.