How many countries had a total freshwater withdrawal (km 3 /yr) where the agricultural use (m 3 /p/yr)(in %) was 428(62%)?
CREATE TABLE "freshwater_withdrawal_by_country_and_sec" (
  "country" text,
  "total_freshwater_withdrawal_km_3_yr" text,
  "per_capita_withdrawal_m_3_p_yr" real,
  "domestic_use_m_3_p_yr_in_pct" text,
  "industrial_use_m_3_p_yr_in_pct" text,
  "agricultural_use_m_3_p_yr_in_pct" text
);
SELECT COUNT("total_freshwater_withdrawal_km_3_yr") FROM "freshwater_withdrawal_by_country_and_sec" WHERE "agricultural_use_m_3_p_yr_in_pct"='428(62%)';