What is the percentage increase/decrease from 20 to 12.1?

Answer: The percentage change is -39.5%.

Let's see how we can calculate this percentage: what is the percentage increase/decrease from 20 to 12.1? Here is a very simple step-by-step guide to find out.

Step 1: We use the following formula:

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

• \(X = 20\)
• \(Y = 12.1\)
• Percentage change calculation = \({12.1-20 \over 20}\) = \({-7.9 \over 20}\) = \(-0.395\)

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

\(-0.395\) = \(-39.5 \over 100 \) = \(-39.5\%\)

\(Answer: \) The percentage change is -39.5%.

What is the percentage increase/decrease from 20 to 12.1? -39.5 percent.

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