Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_49 ( crude_birth_rate__per_1000_ INTEGER, natural_change VARCHAR )

### Question ###
Natural change of 42 689 has which lowest Crude birth rate (per 1000)?

### Accurate SQL ###

SELECT MIN(crude_birth_rate__per_1000_) FROM table_name_49 WHERE natural_change = "42 689"