Question

The number of students in a chess club decreased from 20 to 11. What is the percent decrease? Round your answer to the nearest percent.

Can someone pls help quickly with the right answers‍♀️

Answer 1

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Answer:

45%

Explanation:

The percentage change is calculated using ...

percent change = ((new value) - (old value))/(old value) × 100%

For your numbers ...

percent change = (11 -20)/20 × 100% = -9/20 × 100% = -45%

The negative sign indicates the change is a decrease. Here, you're asked for the amount of decrease.

The percent decrease is 45%.