Cost of living in Latina (Italy) is 51% 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 294 prices entered by 19 different people.
For example, you would need at least 2,311,718 ₦ (€5,500) in Latina to maintain the same standard of living that you can have with 1,530,000 ₦ in Abuja.