Well, we could use that formula, but let me explain it in a more humorous way.
Imagine the bone as a fossilized comedian who loves carbon dating jokes. So, initially, the bone had a full set of jokes, represented by 100% of the original amount of carbon-14.
But as time passed, the bone's jokes became less funny. So now, it only has 45% of its original comedic ability, or in scientific terms, carbon-14.
Now, the half-life of carbon-14 is 5600 years, which means it takes 5600 years for the bone's jokes (carbon-14) to lose half of their humor.
Using a little math magic, we can figure out how many half-lives the bone has gone through to reach 45%. If each half-life is 5600 years, and the bone has 45% left, then it must have gone through two half-lives, losing half of its humor each time.
So, multiplying 5600 years by 2, we find that the bone is approximately 11,200 years old. That's quite an ancient comedian!