What is the percentage increase/decrease from 30 to 8.5?

Answer: The percentage change is -71.67%.

Let's see how we can calculate this percentage: what is the percentage increase/decrease from 30 to 8.5? Here is a very simple step-by-step guide to find out.

Step 1: We use the following formula:

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

• \(X = 30\)
• \(Y = 8.5\)
• Percentage change calculation = \({8.5-30 \over 30}\) = \({-21.5 \over 30}\) = \(-0.71666666666667\)

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

\(-0.7167\) = \(-71.67 \over 100 \) = \(-71.67\%\)

\(Answer: \) The percentage change is -71.67%.

What is the percentage increase/decrease from 30 to 8.5? -71.67 percent.

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