Answer:
(a) 152.5
(b) -45.4
(c) 750
(d) -87.5
Explanation:
To calculate the percentage increase:
First: work out the difference (increase) between the two numbers you are comparing.
Increase = New Number - Original Number.
Then: divide the increase by the original number and multiply the answer by 100.
% increase = Increase ÷ Original Number × 100.
I hope this helps! :)