Theory:

Ajay and Kavitha went shopping together. Initially, Ajay had \(₹500\), and Kavitha brought \(₹1500\) to buy some groceries. Can you tell me who spent more if Ajay spent \(₹400\) from the total amount and Kavitha spent \(₹800\) from the total amount?
 
The initial amount they had was not the same. So, by comparing the amount they spent, we can determine who has spent more. 
 
To get an answer in these types of cases, we'll need to use another comparing quantity called "Percentage".
 
Let us see some fundamental ideas of "Percentage".
The term "per cent" means per hundred or for every hundred. This term has been derived from the Latin word "per centum".
 
We use the symbol (\(\%\)) for the term per cent.
Example:
47 per cent is written as 47 \(\%\), which means that "47 out of \(100\)."
Conversion of Percentage:
 
DecimalFractionPercentage
\(0.01\)\(1/100\)\(1\)\(\%\)
\(0.1\)\(1/10\)\(10\)\(\%\)
\(0.2\)\(1/5\)\(20\)\(\%\)
\(0.25\)\(1/4\)\(25\)\(\%\)
\(0.5\)\(1/2\)\(50\)\(\%\)
\(0.75\)\(3/4\)\(75\)\(\%\)