What is the percentage increase/decrease from 170 to 17?

Answer: The percentage change is -90%.

Let's see how we can calculate this percentage: what is the percentage increase/decrease from 170 to 17? Here is a very simple step-by-step guide to find out.

Step 1: We use the following formula:

\(\text{Percentage change}\) = \({Y-X \over X} \cdot 100\%\)

• \(X = 170\)
• \(Y = 17\)
• Percentage change calculation = \({17-170 \over 170}\) = \({-153 \over 170}\) = \(-0.9\)

Step 2: A percentage is a number or ratio expressed as a fraction of 100.

\(-0.9\) = \(-90 \over 100 \) = \(-90\%\)

\(Answer: \) The percentage change is -90%.

What is the percentage increase/decrease from 170 to 17? -90 percent.

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