Revise the exact formulas that repeatedly appear in SSC, Banking, and Railway arithmetic.
What to focus on
- Master percentage value, increase, decrease, and comparison formulas.
- Use formulas with original value, not guessed value.
Quick formula / idea
- Percentage = (Part / Whole) × 100
- Increase % = (Increase / Original) × 100
- Decrease % = (Decrease / Original) × 100
If 45 out of 60 students passed, percentage passed = (45/60) × 100 = 75%.
Practice prompts
- What percent of 80 is 44?
- Find the decrease percent from 500 to 425.