1.618034 said:
Not a Maths major then...?
‘Less than 0%’ was a figure of speech used to emphasise the point I was making – namely how little chance we have of concluding an Ade-Dzeko swap deal – it was not intended to be taken literally as a genuine mathematical representation of the situation. Similarly I don’t actually believe that reading transfer rumours on an Internet forum rots your brain – again this was a figure of speech used to emphasise a point.
Nevertheless, considering you’ve chosen to pick me up on it – whilst negative percentages aren’t possible in the strictest sense, they are in fact commonly used in business when discussing changes in profit margins, so aren’t as daft as you’re making out. For example:
Start amount : Change : Final amount
Change = Final amount - Start amount (whether percentage or absolute value being calculated)
If final amount > start amount then change is positive (both the amount and the percentage changes)
If final amount < start amount then change is negative (both the amount and the percentage changes)
To use an example:
Year 1 profits are -4000
Year 2 profits are -6000
Percentage change in profits = [(-6000-(-4000))/(-4000)]*100
= 50%
Clearly this has not been a positive change in profits, therefore it is a negative change. -50%
Final amount - Start amount = -6000 - (-4000) = -6000 + 4000 = -2000
So the change is negative, a decrease in profits. The percentage change is also negative.
If you are starting from a loss (as you are) then a decrease in profits is interpreted as you will make a bigger loss in second year.
Whilst we’re here, I might as well pick you up on your use of the term ‘maths major’. The concept of a ‘major’ in academia is an American concept – it has no relevance in academia in the UK where we generally concentrate on one subject during undergraduate study, rather than majoring in one aspect of an undergraduate curriculum. As Americans abbreviate Mathematics to Math, rather than Maths (as in the UK), the correct terminology would be a ‘Math Major’ - there is no such thing as a 'Maths Major'. Although I’ve no idea why you’re using that terminology at all unless you are American, in which case you would surely have used Math. A confusion of cultures, I think.