Final answer:
The Third Estate, which included peasants, urban workers, and the bourgeoisie, made up approximately 95% of France's population before the French Revolution.
Step-by-step explanation:
The percentage of France's total population that made up the Third Estate before the French Revolution was approximately 95%. The Third Estate was the largest of the three estates, encompassing almost the entirety of the French population, ranging from peasants and urban workers to the more affluent bourgeoisie. This diverse group bore the brunt of the tax burden and was excluded from the privileges enjoyed by the other two estates, the clergy and the nobility.