Question

calculate the percent change in the electricity bill from march to april. round to the nearest whole percent.

expense	march	april
water	$50.00	$52.00
groceries	$110.00	$125.00
restaurant	$100.00	$85.00

Explanation:

Step1: Identify initial and final values

Initial value (March bill) = $120, Final value (April bill) = $100

Step2: Use percent - change formula

Percent change=$\frac{\text{Final value}-\text{Initial value}}{\text{Initial value}}\times100\%=\frac{100 - 120}{120}\times100\%$

Step3: Calculate the numerator

$100-120=-20$

Step4: Calculate the fraction

$\frac{-20}{120}\times100\%=-\frac{1}{6}\times100\%\approx - 16.67\%$

Step5: Round to nearest whole percent

Rounding - 16.67% to the nearest whole percent gives - 17%

Answer:

-17%