Jakarta shoots to No. 1 in world population ranking from No. 33 in just 7 years. How?

Currently, 9 of the 10 most populous cities — Jakarta; Dhaka; Tokyo; New Delhi; Shanghai; Guangzhou; Cairo; Manila; Kolkata, India; and Seoul — are in Asia. The Indonesian capital surpassed and Bangladesh's capital both surpassed Tokyo because of a UN overhaul on how it measures urban populations

Jakarta shoots to No. 1 in world population ranking from No. 33 in just 7 years. How?
Currently, 9 of the 10 most populous cities — Jakarta; Dhaka; Tokyo; New Delhi; Shanghai; Guangzhou; Cairo; Manila; Kolkata, India; and Seoul — are in Asia. The Indonesian capital surpassed and Bangladesh's capital both surpassed Tokyo because of a UN overhaul on how it measures urban populations