Answer:
8.61% (2 dp)
Explanation:
Salary = 1850
Food = 690
Other = 940
Rent = 20.5% = 20.5/100 = 0.205
Therefore, 20.5% of the salary = 0.205 x 1850 = 379.25
Total spent = 690 + 940 + 379.25 = 2009.25
Percent change = [ (difference between initial and final value) ÷ initial value] x 100
=[(2009.25 - 1850) ÷ 1850] x 100 = 8.61% (2 dp)