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    I have got an interview for a job and it requires me to take an aptitude test, so I am doing practice tests online. However I came across this question and I don't understand the answer even with the explanation given. I thought that the percentage decrease for every period would be 5% which was of course incorrect. Can anyone give me an explanation of why it is the answer given please?

    The attachment shows the question and answer.

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    It does explain it quite well.

    Basically 100-95 is a 5% decrease,
    95-90 is 5.3%
    90-85 is 5.6% and so on.

    What it is saying is the the decrease may the the same year on year, but the % of it's current value it is dropping by is larger.

    Although the question is totally unclear on whether the decrease should be measured in relative or absolute. And is therefore a really poor question.
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