CREATE TABLE table_name_49 (crude_birth_rate__per_1000_ INT, natural_change VARCHAR)

Natural change of 42 689 has which lowest Crude birth rate (per 1000)?
SELECT MIN(crude_birth_rate__per_1000_) FROM table_name_49 WHERE natural_change = "42 689"
SELECT MIN("crude_birth_rate__per_1000_") FROM "table_name_49" WHERE "42 689" = "natural_change"