Percentage calculator

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What is % of ?
is what percent of ?
is % of what?
The fraction / is what percent?
% increase of is
% decrease of is
% is what fraction/number?
What is the percentage increase/decrease from to ?
Climb/descent of % is what angle in degrees?
Climb/descent of degrees is what percent?
If a goods sells for after a % markdown, what was its original price?

What is the percentage?

A percent is a ratio whose second term is 100. Percent means parts per hundred. The word comes from the Latin phrase per centum, which means per hundred. In mathematics, we use the symbol % for percent or the abbreviation pct.
For example, 12% (read as 'twelve percent') is equal to 12/100, or 3/25, or 0.12.
Percentages are used to express how large or small one quantity is relative to another quantity.

Percentage in word problems:

  • Iron
    250px-Iron_electrolytic_and_1cm3_cube Iron ore contains 57% iron. How much ore is needed to produce 20 tons of iron?
  • Profit gain
    percent_12 If 5% more is gained by selling an article for Rs. 350 than by selling it for Rs. 340, the cost of the article is:
  • Highway repair
    truck_6 The highway repair was planned for 15 days. However, it was reduced by 30%. How many days did the repair of the highway last?
  • Walking
    cargo_truck_5 Of the 450 students at the school, 432 walks to school. What percentage is this?
  • Seeds 2
    seed How many seeds germinated from 1000 pcs, when 23% no emergence?
  • Percents
    percents2_10 How many percents is 900 greater than the number 750?
  • Summerjob
    tree2 The temporary workers planted new trees. Of the total number of 500 seedlings, they managed to plant 426. How many percents did they meet the daily planting limit?
  • Researchers
    house Researchers ask 200 families whether or not they were the homeowner and how many cars they had. Their response was homeowner: 14 no car or one car, two or more cars 86, not homeowner: 38 no car or one car, two or more cars 62. What percent of the families
  • Class
    absenciaSms In 7.C clss are 10 girls and 20 boys. Yesterday was missing 20% of girls and 50% boys. What percentage of students missing?
  • New refrigerator
    lednice New refrigerator sells for 1024 USD, Monday will be 25% discount. How much USD will save, and what will be the price?
  • The Chemistry test
    test The Chemistry test contained 8 questions, each with 3 points. Peter scored 21 points. How many percent did Peter write a test?
  • Auto-tuning
    tv During auto-tuning, the TV searched for 25 channels, four of which were music. The channels are stored in the TV's memory in random order. Express the percentage of the event that the music channel will be saved first.
  • Apples 2
    jablko James has 13 apples. He has 30 percent more apples than Sam. How many apples has Sam?
  • Energy saving
    energy_star They were released three different, independent inventions saving 12%, 15% and 25% energy. Some considered that while the use of these inventions, the total savings will be 12% + 15% + 25% = 52%. Is this true? How much percent of energy will save all thre
  • Percentage 10
    trenky_1 52 shorts and missed 13. Calculate percentage
  • Reward
    metals Janko and Peter divided the reward from the brigade so that Peter got 5/8 of the reward. What percentage of Janko's reward got?
  • Christmas holidays
    christmas How many percent take Christmas holidays lasting 18 days from a school year that lasts 303 days? Round the result to two decimal places

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