Myanmar is 46% larger than Papua New Guinea.
Area: 676,578 km2 World Factbook
Population: 55,746,253 (July 2014) World Factbook
Burma, officially the Republic of the Union of Myanmar, commonly shortened to Myanmar, is a sovereign state in Southeast Asia bordered by Laos, Thailand, China, Bangladesh, and India. Wikipedia
Area: 462,840 km2 World Factbook
Population: 6,552,730 (July 2014) World Factbook
Papua New Guinea, officially the Independent State of Papua New Guinea, is an Oceanian country that occupies the eastern half of the island of New Guinea and its offshore islands in Melanesia, a region of the southwestern Pacific Ocean north of Australia. Wikipedia