To calculate the percent change from 25 to 18, you can use the following formula:
\[ \text{Percent Change} = \frac{\text{New Value} - \text{Old Value}}{\text{Old Value}} \times 100 \]
In this case, the old value is 25 and the new value is 18.
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Subtract the old value from the new value: \[ 18 - 25 = -7 \]
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Divide the change by the old value: \[ \frac{-7}{25} = -0.28 \]
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Multiply by 100 to get the percentage: \[ -0.28 \times 100 = -28 \]
So, the percent change from 25 to 18 is \(-28%\). This indicates a decrease of 28%.