If you are using Microsoft Excel to manage numerical data, at some point you're inevitably going to display percentages. Doing so can give you a new insight, or make summarizing heaps of data a bit ...
Learn how GROUPBY passes both subset and full arrays into LAMBDA in Excel, letting you compute percent shares fast and explain results clearly.
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How to simplify complex Excel formulas for better auditing
Tables, named ranges, line breaks, modern functions, and helper columns make Excel formulas easier to read, audit, and fix.
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