What is the percentage increase/decrease from 20 to 7.8?

Answer: The percentage change is -61%.

Let's see how we can calculate this percentage: what is the percentage increase/decrease from 20 to 7.8? Here is a very simple step-by-step guide to find out.

Step 1: We use the following formula:

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

• \(X = 20\)
• \(Y = 7.8\)
• Percentage change calculation = \({7.8-20 \over 20}\) = \({-12.2 \over 20}\) = \(-0.61\)

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

\(-0.61\) = \(-61 \over 100 \) = \(-61\%\)

\(Answer: \) The percentage change is -61%.

What is the percentage increase/decrease from 20 to 7.8? -61 percent.

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