Question

On Sunday $845$ people went to the zoo. On Monday only $169$ people went. What is the percent decrease in the people visiting the zoo on Monday?

Answer 1

Hint: Percentage is defined as the part of the whole expressed in hundreds. Percentage can be represented as, obtained $\dfrac{\text{Obtained value}}{\text{Maximum value}}\times 100$. The sign of percentage is $%$.
For example: Ravi obtained $365$marks out of $400$. Find the percentage of marks obtained by him.
Percentage$=\dfrac{365}{400}\times 100=91.22%$
In this question, the percentage formula that is used is $\dfrac{\text{Difference}}{\text{Total value}}\times 100$.

Complete step-by-step answer:
On Sunday, people went to zoo $=845$
On Monday, people went to zoo $=169$
In order to find the percentage, first we have to find the difference between the people who went to the zoo on Sunday and Monday.
Thus, $845-169=676$
Hence, the difference is $676$.
Now, applying the percentage formula $\dfrac{\text{Difference}}{\text{Total number of people}}\times 100$.
Percentage decrease in the people visiting on Monday is,
$\Rightarrow$ $\dfrac{676}{845}\times 100=0.8\times 100=80%$

Note: The concept of percentage should be clear before doing these types of questions. Students can get confused while applying the percentage formula, they can forget about finding the difference and can apply the percentage formula directly to the number given.