To get this number of Excel details: advantages of an Excel Task Tracker. Easy to set up: The required basic information is the task name, expected end date, actual (estimated) end date, difference between the two, and comments. The difference is a simple formula that calculates the difference between the two dates. See the attached template as an example. Characteristics: The service credit is determined by the level of service achieved, the Service Level Performance Measure and the Service Level Threshold and calculated using the following linear formula: The provider must immediately inform the customer in writing if the provider`s performance level of an element of the provision of services by him is likely or is not respected during the term of the contract. Excel Details: Once you have chosen your desired level of service, you need to express it as a factor. You can convert your factor by using a formula in Excel (=NORMSINV (X%) or by referring to a table of factors. . . .