The Shroud of Turin illustrates negative image of body of the man who seems to have been crucified. It is considered by many to be burial shroud of Jesus of Nazareth. In 1988 Vatican granted permission to have shroud carbon dated. Many independent scientific laboratories examined the cloth and consensus opinion was that shroud is approximately 660 years old, age consistent with its historical appearance. This age has been disputed by several scholars. Using age, compute what percentage of original amount of C-14 remained in cloth as of 1988.