Mumbai (India) is 0.77 times as big as New York City (US)
Mumbai, formerly known as Bombay, the official name until 1995) is the capital city of the Indian state of Maharashtra. According to the United Nations, as of 2018, Mumbai is the second-most populous city in the country after Delhi and the seventh-most populous city in the world with a population of roughly 20 million.
New York City (NYC), often called simply New York, is the most populous city in the United States. It is located at the southern tip of the U.S. state of New York. New York City is composed of five boroughs, each of which is a county of the State of New York. The five boroughs - Brooklyn, Queens, Manhattan, the Bronx, and Staten Island - were consolidated into a single city in 1898.