To calculate the percentage error, we need both the recorded measurement and the actual or true value of the measurement. Since the actual value isn't provided, I'll explain the general formula for percentage error:

$\text{Percentage Error} = \left(\frac{|\text{Measured Value} - \text{Actual Value}|}{\text{Actual Value}}\right) \times 100\%$

If you provide the actual value, I can calculate the percentage error for you.

Do you have the actual value of the long jump measurement?

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Here are 5 related questions you might find interesting:

1. How is the percentage error used in scientific experiments?
2. What are some common sources of error in measurement?
3. How would the percentage error change if the actual value were higher or lower?
4. What is the difference between absolute error and percentage error?
5. Can percentage error be negative?

Tip: When calculating percentage error, always express the error as an absolute value to avoid negative results, which could be misleading.