Draw a circle with a compass, then calculate the conditions on the statistical table (for example, food expenditure accounts for 35% of the total expenditure), and multiply 360 degrees by the corresponding percentage of each condition to get how many degrees each condition should draw on the departmental statistical chart. After these tasks are completed, determine the center point of the circle, then draw the sectors with a protractor, and finally mark the corresponding conditions and percentages in each sector. I'll give you a schematic diagram for your reference.