Cost of living in Latina (Italy) is 49% more expensive than in Abuja (Nigeria)
This comparison is lacking data. It provides a decent comparison, but it is not yet reliable. It is based on 305 prices entered by 22 different people.
For example, you would need at least 2,518,657 ₦ (€6,169) in Latina to maintain the same standard of living that you can have with 1,690,000 ₦ in Abuja.