GRE Math: Percent Change
Percent change is a topic that often confuses people, but it's not hard if explained the right way.
The question is asking you to calculate the percent change between two numbers. All you have to do is find the difference between the two numbers. Then, take that amount, and divide it by the original number, and multiply your answer by 100 to convert it to a percent. Boom. Done.
The tricky part comes in if you don't know which number was the original one - i.e., if there's no chronology present (like yesterday's high and today's high).
In this video, I clear that situation up, and give you a simple way to deal with percent change on the GRE. Enjoy!
Spoiler alert: this question is from ETS Powerprep Online Test 1.
If you liked this video, check out my other free GRE resources.