After a salmonella outbreak, the demand for tomatoes decreases, causing a leftward shift of the demand curve from D₁ to D₂. This fall in demand results in a new equilibrium point E₂, which is lower than the initial equilibrium point E₁. The equilibrium quantity falls from Q₁ (400 pounds) to Q₂ (150 pounds), and the equilibrium price falls from P₁ ($3) to P₂ ($1.75).