What is the percentage chance a 24 year old can get colon cancer I'm 6ft 220 so I'm not that big?

Negligible. Unless there is family history of early age colon cancer, your chance of having colon cancer is negligible. You may consult this site for more info.
For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.
Practice safe sex, if you have sex.