## Percent error calculation

The absolute error is equal to the absolute value of the difference between the exact value and the approximated value:

ε = | *V*_{exact} - *V*_{approx} |

The percent error is equal to the 100% times the absolute error divided by the exact value:

δ = 100% × | *V*_{exact} - *V*_{approx} | / | *V*_{exact} |

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