CREATE TABLE table_27929 ("meas. num." FLOAT, "passed" CLOB, "YES votes" FLOAT, "NO votes" FLOAT, "% YES" CLOB, "Const. Amd.?" CLOB, "type" CLOB, "description" CLOB)

How many ballot measures had a percentage yes of 52.11%?
SELECT COUNT("passed") FROM table_27929 WHERE "% YES" = '52.11%'
SELECT COUNT("passed") FROM "table_27929" WHERE "% YES" = '52.11%'