It is very hard to generalize. Some things do have a historical trend. Population statistics frequently show a positive trend, hence the calculated percentages are typically positive. The downturn in the world economy recentlyproduced a lot of calculated negative percentages. You may find thousands of negative percentages if you follow the Stock Market. There is a tendency for convenience and clarity, to state percentages as "20% lower" or "20% off" instead of saying the "price today = stated price - 20% of the stated price."
what are answers
It is usually calculated on a percentage basis. A total of all your monthly obligations and your income and available assets.
In 2014, the percentage of people who were eligible to vote varied by country. It is calculated by taking the number of eligible voters divided by the total population of voting age, usually expressed as a percentage.
This depends on where you are. There is no Federal sales tax, but there are state and local taxes in some places. Usually it is a percentage of the purchase price.
excise tax
excise tax
Any percentage of temperature should be calculated in Kelvin.
Excise tax
phase is the relation to 2 or more interfering waves. It's usually given in the percentage either positive or negative interferance.
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The percentage varies according to race. About 85% of Americans have Rh+ blood. In China, the percentage is over 99%. The worldwide percentage is about 90%.
Yes, with a percentage reaches only to 25%.