The top five cheapest countries are: India, Nepal, Pakistan, Tunisia, and Algeria.
The most expensive countries are: Switzerland, Norway, Venezuela, Iceland, and Denmark.
The CPI in the infographic is a relative indicator of a country's living costs compared to New York. So, for instance, if a country has a CPI of 70, on average it enjoys 30% cheaper living costs compared to New York.
An interesting map from MoveHub reveals living costs around the world.