3 Essential Tips for Success:

→ When calculating ratios say of A to B simply use:

A ÷ B : 1

e.g. the ratio of 16 to 29 = 16 ÷ 29 = 0.55 : 1

→  For calculating percentage change

Simply take the new number minus the old number divided by the old number, EASY!

e.g. calculate the percentage increase from 50 visits in 2011 to 75 visits in 2012?

75 (the new number) – 50 (the old number) divided by 50 (the old number) = 50%

It really is that simple!

→ OR you can try the following:

For calculating percentage increase when A is the original number and B the final use:

[(B ÷ A) – 1] x 100%

e.g. percentage increase from £20 to £35 = [(35 ÷ 20) – 1] x 100 = 75% (don’t forget the brackets!)

For calculating percentage decrease when A is the original number and B the final use:

[(A – B) ÷ A] x 100%

e.g. percentage decrease from £56 to £42 = [(56 - 42) ÷ 56] x 100 = 25% (don’t forget the brackets!)