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?
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What is percentage?

Percentage is a number (or ratio) expressed as a fraction of 100. It is often denoted using the percent sign, %, or the abbreviation pct.
For example, 12% (read as 'twelve percent') is equal to 12/100, or 3/25, or 0.12.
Percent is sometimes written as two words 'per cent' and means 'per hundred'.
Percentages are used to express how large or small one quantity is relative to another quantity.