A percentage is a number or ratio expressed as a fraction of $100$. It is often denoted using the percent sign, "$%$", or the abbreviation "$\mathrm{pct}$." -Wikipedia. Percentages are used when describing portions or proportional changes.
Questions tagged [percentages]
1440 questions
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how to calculate percentage based on added amount?
Example, I have 100 in the account and they give me an interest bonus of 2, that is, now I have 102 thanks to the interest they gave me. Is there a formula to know according to the amount they gave me? Here, because they are simple numbers, we can…
HDss
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What equation would I need to calculate the percentage of known values X and Y that would be equal to known value Z?
Apologies in advance, I haven't been able to find the terminology/vocabulary to describe what may very well be a basic issue.
I am exploring differences between energy purchase tariffs. The first tariff (Z) is a flat rate. On the second tariff, part…
danwri
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Question about computing percentage changes in an RPG skill
I'm a little confused about percentages.
Basically, in the latest patch notes for this RPG I've been playing, the numbers for a skill have changed as follows:
57.4 damage per second => 45.92 damage per 0.8 seconds
In a reddit thread, this was…
Android Noob
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Two different product results from a percentage and decimal counterpart
Why am I getting two different products when I multiply 190,690,000 and 14.518% and 190,690,000 and .14518.
The former is 27,684,386.41 and the latter is 27,684,374.20.
Am I going crazy?
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Total Percentage from Multiple Percentages
I have to give an overall percentage score to learners after they sit two tests.
The first test is scored from 16 and the second is scored from 48. The overall score, therefore, is taken from 64.
Let's say a learner scores 16 on the first test…
Karl
- 113
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How to calculate an aggregate of percentages?
I have a task, and it's children. Now each child is having an amount and a estimate, which is a said percentage of the amount.
So for example, if I have an amount of 100 and an estimate of this amount over 10% is 110.
So I want to calculate the sum…
HexaCrop
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What is the name of the % change calculation where from -1 to 1 is considered +200%?
I'm doing some work in a domain where it is normal to say that if the value was -1 and is now 2 There has been a +300% change.
To give some other examples:
( 10, 5) -> - 50%
( 10, -5) -> - 150%
(-10, 5) -> + 150%
(-10, -5) -> + …
MYK
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1 answer
Calculation of successive discount percentage
Two furniture stores are running double discount sales. ABC offers a
discount of 60%, followed by another discount of 10% on that
discounted price.
XYZ offers a discount of 50%, followed by another
discount of 25% on that discounted price.
Explain…
Harry B
- 95
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A question about percentages with one fixed number
I have a rather simple question about percentages that I can't solve for the fourth time. It comes up every few months and I just have to 'guess' the number but there must be a simple formula that I just cant figure out.
Basically it is the…
Dani
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Formula for consecutively subtracting a percentage n times
I'm looking for a formula to subtract a percentage (e.g. $10\%$) from a number (e.g. $100$) a certain number of times (e.g. $4$) in which case:
$x=100$
$p=0,1$ (i.e. $10\%$)
$n=4$
Doing it manually goes like this:
$y_1 = 100 - 10\% = 90$
$y_2 = 90…
Oleg
- 113
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Explain to 10 year old: "Don’t talk about percentages of numbers when the numbers might be negative."
Kindly see the embolded sentence below. I don't know why this author exemplified this slogan so complicatedly (my 10 year old didn't understand it), rather than more basically by using $\|$numbers$|$ as small as possible. Can anyone exemplify this…
user53259
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Am I correctly calculating the % speed where the smallest value is the fastest?
Ok here I am again, the worlds biggest maths noob, I have been wracking my brain over this seemingly simple problem, I am comparing the speeds of different ways of pushing integers to an array in code and I really don't know if I'm doing this…
Nickotine
- 225
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"Reverse" percentage difference
Using the percentage difference formula, explained here, with the numbers $1$ and $1.5$, I have a result of $40\%$.
So, if i have a $100$ value, how can I find two numbers with a formula that add up to $100$ with the same $40\%$ percentage…
João Ramos
- 13
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Calculating multiple chances
I have 1000 rolls and I can get 4 rewards:
Reward A - 30%
Reward B - 14.4%
Reward C - 40.6%
Ability to re-roll - 15%
*re-roll has the same chances for rewards, so it can give a re-roll again.
I want to calculate final % chances for rewards A, B and…
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How do you calculate the total and percent overhead added by TCP, IP and link (IEEE 802.3) layer encapsulations?
I need help figuring out how to compute the total and percent overhead added by TCP, IP and link (IEEE 802.3) layer encapsulations for each of the following message sizes:74 bytes,152 bytes,3000 bytes
I know the header size for TCP= 20 bytes with no…
vlake
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