Working Out A Percentage Increase

bednobs | 17:51 Mon 27th Mar 2023 | ChatterBank

54 Answers

something initially cost 115. The price increased to 144.
How to work out the % increase, and the answer please

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New Judge

It’s a shame bednobs hasn’t been back to let us know how useful our answers were. We were asked to show how to work out the percentage increase and the to provide the answer. I think most of the answers have done just that. We were not actually asked to provide an explanation of the methodology and I think criticism of the answers provided is a little unfair. So perhaps bednobs can tell us whether the answers provided so far suffice, or whether we were expected to provide something like this:

To find the percentage increase of something you firstly need to find the increase itself. Let’s say your numbers represent the price of an article in £££s. So the increase in your example is the difference between £144 and £115. Your article, originally valued at £115, has therefore increased by £29 (£144 minus £115).

“Percentage” means “for each hundred.” You know that your article has increased by 29 for each 115. To express this as a percentage, you need to calculate how many this is for each hundred. To do this, first of all, find out how much this is for every one. You do this by dividing your 29 increase by 115 (its base value). This works out as 0.2522. That is the increase for every pound of the base price. To calculate how much this is for every hundred pounds you multiply that number by 100. To do this, move the decimal point two places to the right, so the answer is 25.22%.

You can show this calculation arithmetically as (144-115)/115 x 100. On a calculator you would key in 144 minus 115; divide that answer by 115 and multiply that answer by 100.

ToraToraTora

judge: surely the answers at 17:57, 17:58, 17:59, 18:08, 18:10 Show clearly how it's done??

bednobs

Question Author

I have been back. See answer 40

bednobs

Question Author

But in anycase I rather lazilyused the answer provided but bookmarked the question so I don't have to ask again when I have to do a similar sum again. It's neither of the things suggested by dtc and in fact the question really related to something I'm buying for Ks rather than tens of pounds.

New Judge

//judge: surely the answers at 17:57, 17:58, 17:59, 18:08, 18:10 Show clearly how it's done??//

Quite agree, Tora. But those answers did not seem to suit one of our members. I quote:

" I doubt if anyone here has come anywhere near helping her (apart from simply telling her the answer). You're all know-it-alls and none of you knows how to teach.
No communication skills."

"Most of the advice here seems to be from people who assume that everyone knows everything already."

That's why I thought a more comprehensive answer might have suited. Of course as soon as I posted I realised I had not fully explained how moving the decimal point two places multiplies by a hundred. Come to that I hadn't explained what a decimal point was at all. Another example of a know-all with no communication skills and who assumes that everyone knows everything already. Must try harder. :-)

Prudie

It's not very easy to know how to answer any of these questions. Bear in mind we have another female poster who asks fairly basic arithmetic problems now and again and just wants the final answer, -and woe betide anyone who tries to teach her how do it herself.

roadman

My answer was helpful if you find one percent then that is extremely helpful for any percentage question because then you can times it by the number you need to find one percent i think you divide number by 100 so 155 divided by 100 times 144 i think if i am wrong please someone tell me

roadman

115 i do mean

bednobs

Question Author

which is why i asked for the method and the answer :)

Prudie

You did :-) BTW I am still laughing out loud at the 'see your TCL and raise you .." comment last night (had to mention it, really tickled me).

roadman

prudie i must admit i saw that comment and it made me laugh a lot

roadman

And then andy came in and said dont use me for your whatever and it was hilarious

Prudie