Chapter 2 - Solving Equations - 2-10 Change Expressed as a Percent - Practice and Problem-Solving Exercises - Page 148: 13

There was an increase of about $54\%$.

Change in value: $=\text{new amount} - \text{original amount} \\= 22,320-14,500 \\= 7,820$ There was an increase. Percent Change: $ =\dfrac{\text{change in value}}{\text{original amount}} \\=\dfrac{7,820}{14,500} \\\approx 0.54 \\\approx 54\%$ There was an increase of around $54\%$.