Add comments to clarify function calls, variable assignments, and error identification in percentage change calculation

Author: TTiamiyu

Sprint-1/3-mandatory-interpret/1-percentage-change.js

@@ -12,11 +12,26 @@ console.log(`The percentage change is ${percentageChange}`);
 // Read the code and then answer the questions below
 
 // a) How many function calls are there in this file? Write down all the lines where a function call is made
+    //1. Line 5: carPrice.replaceAll(",", "")
+    //2. Line 6: priceAfterOneYear.replaceAll(",", "")
+    //3. Line 8: console.log(`The percentage change is ${percentageChange}`)
 
 // b) Run the code and identify the line where the error is coming from - why is this error occurring? How can you fix this problem?
+    //The error is in line 5, the error is occurring because there was a comma missing here; ("," "").
 
 // c) Identify all the lines that are variable reassignment statements
+    //carPrice = Number(carPrice.replaceAll(",", ""));
+    //priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",",""));
 
 // d) Identify all the lines that are variable declarations
+    //let carPrice = "10,000";
+    //let priceAfterOneYear = "8,543";
+    //const priceDifference = carPrice - priceAfterOneYear;
+    //const percentageChange = (priceDifference / carPrice) * 100;
+
 
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
+    //The expression is converting the string representation of the car price to a number by first removing the comma.
+
+    //Purpose: 
+    //To allow the computer identify the value of the car price as a number so that it can be used in calculations.