Radioactive Carbon-14 has a half-life of approximately 5730 years. It collects in living plants and plant-eating organisms and will start to decay...

Radioactive Carbon-14 has a half-life of approximately 5730 years. It collects in living plants and plant-eating organisms and will start to decay once the organism dies. 

Assume an animal bone is discovered in an archeological dig and is Carbon-14 dated to be roughly 7,000 years old. 

What fraction of the initial amount of Carbon-14 is remaining?