You have not metioned which artery has calcification, that is in the heart or brain.
But for 40% it can be managed by medicines provided patient follow the diet and excercise with dedication. Low fat, low chalorie, high fiber and high protien diet along with regular walk for at least 45 minutes a day, pranayam and Yogasanas will control further damage.
Aslo see your doctor every three months for a regular check up.
I wish you a happy and healthy life.