Percent Change - Definition & Examples
Read this topicExplanations 3
- Calculating Percent Change You're probably more familiar with the idea of percent change than you realize. Every time you see a TV commercial, a billboard, or a storefront sign …
By Hannah Bonville, Alex Federspiel, Caroline K, Jonathan Heller, Anusha Rahman, Gabi Slizewska
- Example: Increase in club member In percent change problems, we are always comparing the change to the original. This makes sense, because we are interested in how we have progr…
By Christine, Alex Federspiel, Anusha Rahman, Gabi Slizewska
- (Video) Percent Change Formula by The Organic Chemistry Tutor This video by The Organic Chemistry Tutor demonstrates the percent change formula with an example. Summary\large{\t…
By Christine, Alex Federspiel, Amy Feraco, Jonathan Heller, Anusha Rahman, Gabi Slizewska
Problems 30
- What is the percent change from 900900900 to 972972972?
- What is the percent change from 888 to 777?
- What is a 12%12\%12% increase of 606060?
- What is the percent change from 396396396 to 495495495?
- What is the percent change from 495495495 to 396396396?
- A cereal company wants to write a slogan on their bigger box. The new box holds 202020 servings of cereal instead of the old 161616 servings. What fits in the slogan "New Bigger…
- What is the percent decrease from 282828 to 212121?
- What is the percent change formula?
- After a 10%10\%10% increase, what does 121212 become? Express your answer as a decimal with no spaces.
- After a 12%12\%12% increase, what does 101010 become? Express your answer as a decimal with no spaces.
- A tea shop increased their prices by 25%25\%25%. Now, they're having a sale where all prices are discounted 20%20\%20% from those increased prices. If a cup of tea cost 3.25\3.2…
- Suppose that you have 808080 strawberries. A bird flies by and steals 25%25\%25% of them. Then, you give 25%25\%25% of the remaining strawberries to your friend. How many strawb…
- Suppose that your monthly salary is 1000\10001000. You get a 20%20\%20% raise. Yay! But then you get a 20%20\%20% pay cut. Oops. What is your monthly salary now?
- What is the percent change from 6π6\pi6π to 9π9\pi9π?
- Four inches are cut from a five foot board. What is the percent decrease in the length of the board?
- The price of an item increases by 21%21\%21% and then decreases by 45%45\%45%. What is the total percent decrease of the price of the item?
- The cost of a boat decreases by 25%25\%25% then increases by 25%25\%25%. What is the resulting % increase or decrease of the price of the boat?
- If an item costs 60\6060 and increases by 20%20\%20% then decreases by 45%45\%45%, what is the resulting percent decrease in the price of the item?
- What is 230230230 decreased by 45%45\%45%?
- What is the percent change from 16.416.416.4 to 33.233.233.2?
- What is a 16%16\%16% decrease of the quantity, "465465465 increased by 3%3\%3%"?
- If 202020 is decreased by 14%14\%14% and then increased by 10%10\%10%, what is the resulting value?
- Jessica's real estate agent told her that her house had appreciated in value over the last 222 years. In other words, it went from being worth 104,300\104,300104,300 to being wo…
- A company allows their employees to package 5.5%5.5\%5.5% more product into their boxes. If the new weight of the boxes is 151515 pounds, how much product was originally in the …
- An average bag of chips contains 10 ounces of chips. A new chip company claims that their bags contain 30% more chips than the average bag. Calculate how many ounces of chips ar…
- The supermarket raises the price of beef from 4.254.254.25 dollars/lb to 4.804.804.80 dollars/lb. What is the percent increase in the price of beef?
- In order to raise their headphone sales, a company lowers the price of their headphones from 29.99\29.9929.99 to 27.90\27.9027.90. What is their percent decrease in price?
- The number of students in a class drops by 19%19\%19% to 484848 students. How many were initially in the class? Use the percent change formula to calculate your answer.
- A used car has a starting price of 14,965\14,96514,965. If it is sold for 12,700\12,70012,700, calculate the car's percent decrease in price.
- If you buy all of these paintings, how many years will it take to make your money back? Round your answer to the nearest hundredth