To calculate the percentage of incomplete records during the quarter, we use the following formula: (Number of incomplete records / Average monthly discharges) * 100. Here, the number of incomplete records is 1,002 and the average monthly discharges are 1,820. Thus, the calculation is (1,002 / 1,820) * 100, which equals approximately 55%. Therefore, the percentage of incomplete records during this quarter is 55%.