#percentage decrease and increase

[allmathtricks]

In this video explained about the tricks and shortcuts in following percentage problems.

1. X what percent on y

2.  X what percent less than on Y

3. X what percent greater than on Y

4. How to calculate percentages increases and decrease of the same number.

5. If the radius of a circle is increased by X % then the area of the circle how much percent increased

[allmathtricks]

If the radius of a circle is increased by X % then the area of the circl...

it is also explained about  If the side of a square has increased by X%, by what % has its area increased