What is the percentage increase/decrease from 100 to 109?

Answer: The percentage change is 9%.

Let's see how we can calculate this percentage: what is the percentage increase/decrease from 100 to 109? Here is a very simple step-by-step guide to find out.

Step 1: We use the following formula:

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

• \(X = 100\)
• \(Y = 109\)
• Percentage change calculation = \({109-100 \over 100}\) = \({9 \over 100}\) = \(0.09\)

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

\(0.09\) = \(9 \over 100 \) = \(9\%\)

\(Answer: \) The percentage change is 9%.

What is the percentage increase/decrease from 100 to 109? 9 percent.

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