Formatting financial statements in commn size can eliminate inherent bias' that usually occurs whenever analyzing companies of differing sizes. Common size also allows for the analysis of a company over various time periods rapidly, e.g. revealing what percentage of sales is cost of goods sold and how that value has changed over time.
Nuveen Quality Municipal Incom, https://www.nuveen.com/en-us/closed-end-funds/nad-nuveen-qua, SIC Code: 6282, INVESTMENT ADVICE
View Financial Statements Report for Nuveen Quality Municipal Incom