CREATE TABLE table_73867 ("Constituency" TEXT, "Candidate" TEXT, "Affiliation" TEXT, "Result - votes" FLOAT, "Result - %" TEXT, "Loss/gain" TEXT)

What is the largest vote result if loss/gain is -0.5%?
SELECT MAX("Result - votes") FROM table_73867 WHERE "Loss/gain" = '-0.5%'
SELECT MAX("Result - votes") FROM "table_73867" WHERE "Loss/gain" = '-0.5%'