Turnout was nearly 46 per cent, according to Clement Atangana, the constitutional council’s president. RDPC's share of seats fell from 148 in the outgoing parliament.
Elections did not take place in 13 seats covering the Anglophone regions and are expected to be held at a later date.
The Social Democratic Front party, who were the country’s largest opposition party during the 2013 polls, saw their number of seats fall from 18 to just five.
The elections were overshadowed by the crisis in the north west and south west of the country where Anglophone separatists have declared independence.
Cameroon’s 87-year-old Biya has ruled the country for more than 37 years.
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