Why did they change Bombay to Mumbai?
The name Mumbai is an eponym, etymologically derived from Mumba or Maha-Amba— the name of the Hindu goddess Mumbadevi, and Aai — mother in Marathi. The former name Bombay had its origins in the 16th century when the Portuguese arrived in the area and called the place with various names, which would finally take on the written form Bombaim, still common in current Portuguese use. After the British gained possession in the 17th century, it was anglicised to Bombay, although it was known as Mumbai or Mambai to Marathi and Gujarati-speakers, and as Bambai in Hindi, Urdu, and Punjabi. However, even Marathi and Gujarati-speakers commonly used “Bombay” when speaking in English. The name was officially changed to its Marathi pronunciation of Mumbai in 1995.