To calculate the percent change from 4 to 5, you can use the formula:
\[ \text{Percent Change} = \left(\frac{\text{New Value} - \text{Old Value}}{\text{Old Value}}\right) \times 100 \]
In this case, the old value is 4 and the new value is 5.
\[ \text{Percent Change} = \left(\frac{5 - 4}{4}\right) \times 100 = \left(\frac{1}{4}\right) \times 100 = 25% \]
This is an increase, as the new value (5) is higher than the old value (4).
So, the percent change from 4 to 5 is a 25% increase.
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