Table: peru_census_2005
Columns: region
population
of_countrys_population
change_in_population_since_1993
change_in_of_countrys_population_since_1993

Question: In what region was the change in % of the country's population since 1993 at 0.3? 
SQL: SELECT "region" FROM peru_census_2005 WHERE "change_in_of_countrys_population_since_1993" = '0.3'

Question: What is the change in population since 1993 in the region where the % of country's population was 4.2? 
SQL: SELECT COUNT("change_in_population_since_1993") FROM peru_census_2005 WHERE "of_countrys_population" = '4.2'

Question: What is the change in % of the country's population since 1993 in the Lambayeque region?
SQL: SELECT "change_in_of_countrys_population_since_1993" FROM peru_census_2005 WHERE "region" = 'Lambayeque'