What is the percentage increase/decrease from 105 to 21?

Answer: The percentage change is -80%.

Let's see how we can calculate this percentage: what is the percentage increase/decrease from 105 to 21? Here is a very simple step-by-step guide to find out.

Step 1: We use the following formula:

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

• \(X = 105\)
• \(Y = 21\)
• Percentage change calculation = \({21-105 \over 105}\) = \({-84 \over 105}\) = \(-0.8\)

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

\(-0.8\) = \(-80 \over 100 \) = \(-80\%\)

\(Answer: \) The percentage change is -80%.

What is the percentage increase/decrease from 105 to 21? -80 percent.

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