Cost of living in Havana (Cuba) is 76% 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 536 prices entered by 33 different people.
For example, you would need at least 2,646,300 ₦ (7,330 CUC) in Havana to maintain the same standard of living that you can have with 1,500,000 ₦ in Abuja.