To find out what percent one billion is of a trillion, we can use a simple formula:
Percentage = (Part / Whole) * 100
In this case, the part is one billion (1,000,000,000) and the whole is a trillion (1,000,000,000,000). So, we can plug these numbers into our formula:
Percentage = (1,000,000,000 / 1,000,000,000,000) * 100
Calculating this gives us:
Percentage = (1 / 1000) * 100 = 0.1%
Therefore, one billion is 0.1% of a trillion.