Calculation of percentage is an interesting part in the world of mathematics and obvious in every math classes.

The percentage converter helps you with percent increase, decrease, differences, calculation and to figure out percentage. Get the help you need on finding the percentage here.

Annie lost 4 bottles of Coca Cola from a crate with a total of 24 bottles. What percentage of Coca Cola bottles were lost from the crate?

**4 / 20 * 100 = 16,66 %**

Eddie won 2 million dollars on a lottery. He had to give away 50.000 dollars of the prize. What percentage of the lottery prize did he have to give away?

**50 000 / 2 000 000 * 100 = 2,5 %**

Jamie bought 30 apples on the fruit market, and found out that 3 of them were rotten inside. What percentage of the apples were rotten?

**3 / 30 * 100 = 10 %**

Jessie found a pair of jeans on sale that previously cost 100 dollars. The pair of jeans is reduced by 30 %. How much does Jessie save?

**100 * 30 % / 100 = 30 dollars**

The prices on coffee increases with 5 % due to lack of suppliers. A bag of coffee previously costed 3.99 dollars. What is the new price?

**3.99 * 5 % / 100 = 0,1995**

**3.99 + 0,1995 = 4,1895 ≈ 4.19 dollars**

A new batch of chocolate bars contains 15 % less sugar than the old batch. Each chocolate bar previously contained 23 grams of sugar. What is the amount of sugar in the new bars?

**23 * 15 / 100 = 3,45**

**23 - 3,45 = 19,55 grams**

30 % of the students in Mike's class is vaccinated against swine flu. This adds up to a total of 15 students. How many students are in Mike's class?

**15 / 30 % * 100 = 50 students**

A text book about biology has a 25 % discount, which means a decline in price of 12 dollars. What was the original price?

**12 / 25 % * 100 = 48 dollars**

7 % of the flights from an airport goes to New York. This adds up to a total of 49 flights per week. How many flights goes from this airport each day in total?

**49 / 7 % * 100 = 700**

**700 / 7 = 100 flights**

The price on a basic car insurance increases from $500 to $525. What is the increase in percentage?

**$525 - $500 = $25**

**( 25 / 500 ) x 100 = 5 %**

The price on car insurance increases with 5 %.

A city's population increases from 65 000 to 75 000 over a ten-year period. What is the increase in percentage?

**75 000 - 65 000 = 10 000**

**(10 000 / 65 000) x 100 = 15,38 %**

The city's population increases with 15,38 %.

You start to invest part's of your savings in the stock market. After a five-year period with extreme luck, you have increased your portfolio from $27 000 to $105 000. What is the increase in percentage?

**$105 000 - $27 000 = $78 000**

**(78 000 / 27 000) x 100 = 288,89 %**

Jessie's car drops in value from $32 000 to $25 000. What is the decrease in percentage?

**$32 000 - $25 000 = $7000**

**(7 000 / 32 000) * 100 = 21,88 %**

Jessie's car decreases 21,88 % in value.

You invest $100 000 in a medical company. The company suffers from bad test results and lack of income, which gives you an insane loss. The value of your portfolio is now $54 000. What is the descrease in your portfolio, measured in percentage?

**$100 000 - $54 000 = $46 000**

**(46 000 / 100 000) * 100 = 46 %**

Your portfolio suffers from a 46 % decrease in value.

A school's yearly number of law students decreases from 1200 to 1150 from one year to another, due to termination of teacher's in order to save money. What is the decrease in law students measured in percentage?

**1200 - 1150 = 50**

**(50 / 1200) * 100 = 4,17 %**