Work out the percentage change to 2 decimal places when a price of £189 is decreased to £150.

The percentage change is - 21%

Step-by-step explanation:

The percentage change can be expressed by the formula;

(new price - old price) / old price * 100%

New price = £150

old price = £189

Inputing these values in the formula, we have;

(150-189) / 189 * 100%

-39/189 * 100%

= - 20.63% and that is approximately - 21%