Question detail
A company's revenue decreased from £150,000 to £120,000. Calculate the percentage decrease in revenue.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Statistical skills
Question
A company's revenue decreased from £150,000 to £120,000. Calculate the percentage decrease in revenue.
Answer
20%
Explanation
This answer is strong as it demonstrates the correct application of the percentage decrease formula. The question assesses the understanding of how to calculate percentage decrease, which is essential in statistical analysis.
Common mistake
Confusing absolute change with percentage change
Students often add or subtract the raw change to the original value instead of dividing by the original value and multiplying by 100 to find the percentage change
To calculate percentage increase or decrease, first find the absolute change (new value minus old value), then divide that change by the original value, and finally multiply by 100 to express it as a percentage.
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