Question

A planner at Barnes and Noble originally cost $10. During the weekend, the planner went on sale for $9. What is the price markdown (percent of change)?

Answer 1

$\text{percentage change =}\frac{new\text{ cost -original cost}}{\text{original cost}}\times100^{\frac{0}{\square_0}}$

new cost = $9

original cost = $10

Substitute the value into the formula;

$\text{percentage change =}\frac{10-9}{10}\times100^{}$

= 1/10 x 100%

= 10%