Cost of living in Havana (Cuba) is 68% 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 504 prices entered by 36 different people.
For example, you would need at least 3,043,594 ₦ (8,373 CUC) in Havana to maintain the same standard of living that you can have with 1,810,000 ₦ in Abuja.