The phrase "coefficient of destruction" typically would be used to describe a numerical value that quantifies the extent or rate of destruction occurring in a given context, though it's not a common or standard term in English.

विनाश का गुणांक

English Usage: The engineer calculated the coefficient of destruction to assess the damage caused by the earthquake.

Hindi Usage: इंजीनियर ने भूकंप से हुए नुकसान का आकलन करने के लिए विनाश का गुणांक की गणना की।