2000: $36 billion
2007: $55 billion
$55 billion is what percent of $36 billion?
"is" means =
"what" means x
"percent" means /100
"of" means *
55 = x/100 * 36
55 = x * 0.36
x = 55 / 0.36
x = about 152.78
It's an increase, so 152.78% is an increase of 52.78% over 100%.
Answer: about 52.78%