Like what you saw?
Create FREE Account and:
- Watch all FREE content in 21 subjects(388 videos for 23 hours)
- FREE advice on how to get better grades at school from an expert
- Attend and watch FREE live webinar on useful topics
Percent Change - Concept
MA, Stanford University
Teaching in the San Francisco Bay Area
Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts
In math, sometimes we want to calculate the percent that something changes. Percent changes are often seen in word problems and are useful in many real world situations, for example when shopping sales or when calculating a tip. A percent change is a way to describe how much a quantity increases or decreases. For example, when you buy an item with tax, the tax is the percent change from the original price to what you paid.
Percent change is an easy and quick math topic that shows up all over the SAT, the ACT high school exit exams and standardized tests. So if you want to increase your scores on those kinds of tests this is a good concept for you to tuck away in the back of your brain. It's not too hard once you remember the formula, the way to find out percent change is to do the new price take away the old price then divide that result by the old price. New take away old divided by old or new new take away the original divided by the original price. That's just a quick little formula that'll help you figure out the percent change usually involved in two dollar amounts.
Stuck on a Math Problem?
Ask Genie for a step-by-step solution
Please enter your name.
Are you sure you want to delete this comment?
Sample Problems (1)
Need help with a problem?
Watch expert teachers solve similar problems.