## Percent error conversion or formula

Percent error is the difference between estimated value and the actual value in comparison to the actual value and is expressed as a percentage. In other words, the percent error is the relative error multiplied by 100.

## 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} |