If the dry density is 800, what is the drying shrinkage %?
CREATE TABLE "properties_of_foamed_concrete" (
  "dry_density_kg_m3" real,
  "7_day_compressive_strength_n_mm2" text,
  "thermal_conductivity_w_m_k" text,
  "modulus_of_elasticity_k_n_mm2" text,
  "drying_shrinkage_pct" text
);
SELECT "drying_shrinkage_pct" FROM "properties_of_foamed_concrete" WHERE "dry_density_kg_m3"=800;