Story highlights Nearly 87 million Nigerians living in extreme poverty

The Democratic Republic of Congo comes second

Lagos, Nigeria (CNN) Nigeria has overtaken India as the country with the largest number of people living in extreme poverty, with an estimated 87 million Nigerians, or around half of the country's population, thought to be living on less than $1.90 a day.

The findings, based on a projection by the World Poverty Clock and compiled by Brookings Institute, show that more than 643 million people across the world live in extreme poverty, with Africans accounting for about two-thirds of the total number.

In Nigeria, as with other countries on the continent, that figure is projected to rise. "By the end of 2018 in Africa as a whole, there will probably be about 3.2 million more people living in extreme poverty than there are today," the researchers write.

Despite being the largest oil producer in Africa, Nigeria has struggled to translate its resource wealth into rising living standards.

A slump in oil prices and a sharp fall in oil production saw the country's economy slide into recession in 2016

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