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_50415 ( "City" text, "State" text, "2010 population" text, "Peak population (year)" text, "Numeric decline from peak population" text, "Percent decline from peak population" text )

### Question ###
what is the numeric decline from peak population when the perfect decline from peak population is -16.76%

### Accurate SQL ###

SELECT "Numeric decline from peak population" FROM table_50415 WHERE "Percent decline from peak population" = '-16.76%'