Percentage Class 8 Maths Lecture 2 | Percentage of a Quantity, Increase & Decrease | Conceptora

Welcome to CONCEPTORA – Learn Concepts, Build Confidence! In this video, we continue our Percentage Chapter for Class 8 Mathematics (Lecture 2) with clear explanations, step-by-step calculations, and easy methods to solve percentage questions. Whether you are learning percentages for the first time or revising important concepts, this lecture will help you build a strong mathematical foundation. Topics Covered in This Lecture 1. Finding a percentage of a given quantity 2. Expressing one quantity as a percentage of another 3. Understanding the formula: Percentage = (Part / Whole) × 100 4. Finding fractional percentages such as 62.5% and 18⅓% 5. Solving percentage questions involving different units 6. Percentage increase and decrease 7. Finding the percentage change between two quantities 8. Important examples and practice questions Important Formulas 1. Percentage of a Quantity Percentage of a quantity = (Percentage × Quantity) / 100 2. Expressing One Quantity as a Percentage of Another Percentage = (Required Quantity / Total Quantity) × 100 3. Percentage Increase New Value = Original Value × (100 + R) / 100 4. Percentage Decrease New Value = Original Value × (100 − R) / 100 5. Percentage Change Percentage Change = (Change in Quantity / Original Quantity) × 100 Important Reminder: Before expressing one quantity as a percentage of another, convert them into the same units. Also, make sure both quantities represent comparable types of measurements. Who Should Watch This Video? Class 8 Mathematics students Students revising the Percentage chapter Beginners who want to understand percentages from the basics Students preparing for competitive exams who need strong percentage fundamentals Watch the complete lecture, solve the examples yourself, and practise the questions to improve your calculation speed and accuracy. Subscribe to CONCEPTORA for more educational videos, mathematics concepts, science lessons, and exam-oriented practice. Like the video, share it with your classmates, and comment below if you have any doubts. #Percentage #Class8Maths #PercentageTricks #PercentageIncreaseAndDecrease #Mathematics #Conceptora #MathsLecture