It means your left ventricle is lower than average at pumping blood around the body to feed oxygen/nutrients. This can be caused by many things and your Cardiologist will run some tests to actually establish the cause, and then start the best treatment. Most of the reasons can be fixed and over time your left ventricle should go back to normal.
Some reasons for cause can be high blood pressure, too much alcohol, faulty valve, blocked coronary artery. It could even be due to the electrical impulses of the heart, requiring medication or a pacemaker. The list is quite long, and this is why further tests will be run by your Cardiologist. You will be shocked at how many people have had lower than 32% and recovered.