What is the change number with fewer than 4.7% votes and more than 0 seats?
CREATE TABLE "government" (
  "party" text,
  "pct_votes" real,
  "pct_change" real,
  "seats" real,
  "change" real
);
SELECT SUM("change") FROM "government" WHERE "pct_votes"<4.7 AND "seats">0;