What is the percentage increase/decrease from 640 to 491?

Answer: The percentage change is -23.28%.

Let's see how we can calculate this percentage: what is the percentage increase/decrease from 640 to 491? Here is a very simple step-by-step guide to find out.

Step 1: We use the following formula:

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

• \(X = 640\)
• \(Y = 491\)
• Percentage change calculation = \({491-640 \over 640}\) = \({-149 \over 640}\) = \(-0.2328125\)

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

\(-0.2328\) = \(-23.28 \over 100 \) = \(-23.28\%\)

\(Answer: \) The percentage change is -23.28%.

What is the percentage increase/decrease from 640 to 491? -23.28 percent.

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