What is the percentage increase/decrease from 100 to 18.5?

Answer: The percentage change is -81.5%.

Let's see how we can calculate this percentage: what is the percentage increase/decrease from 100 to 18.5? Here is a very simple step-by-step guide to find out.

Step 1: We use the following formula:

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

• \(X = 100\)
• \(Y = 18.5\)
• Percentage change calculation = \({18.5-100 \over 100}\) = \({-81.5 \over 100}\) = \(-0.815\)

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

\(-0.815\) = \(-81.5 \over 100 \) = \(-81.5\%\)

\(Answer: \) The percentage change is -81.5%.

What is the percentage increase/decrease from 100 to 18.5? -81.5 percent.

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