CREATE TABLE table_203_506 (id NUMBER, "opponent" CLOB, "played" NUMBER, "won" NUMBER, "lost" NUMBER, "drawn" NUMBER, "% won overall" CLOB)

for how many teams was the win percentage below 90 %
SELECT COUNT("opponent") FROM table_203_506 WHERE "% won overall" < 90
SELECT COUNT("opponent") FROM "table_203_506" WHERE "% won overall" < 90