T777

Hi in T777 (TurboTax home and Business 2023), under statement of employment expenses, they provided an example to calculate your employment -use amount - however when I want to enter the correct % in box 48, error msg shows 'You have tried to change the value of a calculate field' Normally it is not necessary to change the values calculated by TurboTax.   The value is clearly incorrect, and it is not allowing override.