What is the change in population since 1993 in the region where the % of country's population was 4.2?
CREATE TABLE table_2637317_1 (
    change_in_population_since_1993 VARCHAR,
    _percentage_of_countrys_population VARCHAR
)
SELECT COUNT(change_in_population_since_1993) FROM table_2637317_1 WHERE _percentage_of_countrys_population = "4.2"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the change in population since 1993 in the region where the % of country's population was 4.2? ### Input: CREATE TABLE table_2637317_1 (
    change_in_population_since_1993 VARCHAR,
    _percentage_of_countrys_population VARCHAR
) ### Response: SELECT COUNT(change_in_population_since_1993) FROM table_2637317_1 WHERE _percentage_of_countrys_population = "4.2"