A positive percentage change that shows how much a quantity has grown relative to its original value. It is calculated by subtracting the original value from the new value, dividing by the original value, and multiplying by 100.
Combines 'percentage' from Latin 'per centum' with 'increase' from Latin 'increscere' meaning 'to grow.' This terminology became standard in business and statistics during the industrial revolution when tracking growth became crucial for economic analysis.
Percentage increase is the mathematical foundation of compound interest, which Einstein allegedly called 'the eighth wonder of the world!' A mere 7% annual increase doubles your money in about 10 years through the magic of exponential growth.
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