user: Question: What is the change in population since 1993 in the region where the % of country's population was 4.2? 
Columns: ['Region', 'Population', '% of countrys population', 'Change in population since 1993', 'Change in % of countrys population since 1993']
Types: ['text', 'real', 'text', 'real', 'text']
Sample row: ['Amazonas', 389700.0, '1.5', 52279.0, '0.0']
SQL:

assistant: SELECT "Change in population since 1993" FROM "Table" WHERE "% of countrys population" = '4.2';