Percentage changes

Question 1

How do you increase a percentage?

Answer 1

Use a decimal multiplier - 1.(the percentage increase) x number

Question 2

How do we perform repeated percentage change (with the same increase/decrease)?

Answer 2

Use an indice on the decimal multiplier

Question 3

What is the formula for percentage change?

Answer 3

% change = (Difference in amount / Original amount) x 100

Question 4

How do we perform repeated percentage change (with different decimal multiplier)?

Answer 4

Multiply the two decimal multipliers together to get a new multiplier and then use that

Question 5

How do you decrease a percentage?

Answer 5

Use a decimal multiplier - (1 minus the decrease) x number

Question 6

What equation do we always need to include in the method for questions?

Answer 6

Original amount x decimal multiplier = new amount

Question 7

How do you perform reverse percentages?

Answer 7

Divide the new amount by the decimal multiplier