What is natural change with a crude death rate of 8.7 and less than 472 live births?
CREATE TABLE "vital_statistics" (
  "average_population" text,
  "live_births" real,
  "deaths" real,
  "natural_change" real,
  "crude_birth_rate_per_1000" real,
  "crude_death_rate_per_1000" real,
  "natural_change_per_1000" real
);
SELECT "natural_change" FROM "vital_statistics" WHERE "crude_death_rate_per_1000"=8.7 AND "live_births"<472;