If Ali’s salary is 10% more than that of Sajjad’s, then how much percent is Sajjad’s salary less than that of Ali?

Let Sajjad’s salary = 100. Ali’s salary = 110. Sajjad’s salary is less by (110 - 100 = 10). Percent decrease = ((10 \div 110) \cdot 100 = 100/11%). Studying this highlights percentage relationships, providing lessons on financial comparisons in economics.