CREATE TABLE table_5979 ("Year" TEXT, "Total matches" FLOAT, "Total W-L-H" TEXT, "Singles W-L-H" TEXT, "Points won" FLOAT, "Points %" TEXT)

Which Total matches is the highest one that has Points % of 70%?
SELECT MAX("Total matches") FROM table_5979 WHERE "Points %" = '70%'
SELECT MAX("Total matches") FROM "table_5979" WHERE "Points %" = '70%'