Nigeria is 16% larger than Pakistan.
Area: 923,768 km2 World Factbook
Population: 177,155,754 (July 2014) World Factbook
Nigeria, officially the Federal Republic of Nigeria, is a federal constitutional republic comprising 36 states and its Federal Capital Territory, Abuja. Wikipedia
Area: 796,095 km2 World Factbook
Population: 196,174,380 (July 2014) World Factbook
Pakistan officially the Islamic Republic of Pakistan, is a sovereign country in South Asia. With a population exceeding 180 million people, it is the sixth most populous country and with an area covering 796,095 km², it is the 36th largest country in the world in terms of area. Wikipedia