Write the amount of change; then find the percent change. Indicate whether it is an increase or a decrease. Round to the nearest percent. SOLVE AND SHOW WORK
9. from 25 to 20
21. from 40 to 30
23. from 75 to 175
9. Change: $-5$. Percent Change: $-20\%$ (decrease)
Explanation: $-5/25 = -0.2$ or $-20\%$.
21. Change: $-10$. Percent Change: $-25\%$ (decrease)
Explanation: $-10/40 = -0.25$ or $-25\%$.
23. Change: $100$. Percent Change: $133\%$ (increase)
Explanation: $100/75 = 1.333...$ or $133\%$ (rounded to the nearest percent).