How To Calculate The Percentage Decrease Between Two Numbers?

7 Answers

James Kent Profile
James Kent answered

Percentage change between two numbers A & B can be calculated as:
(B-A) divided by A multiply by 100

For example, if a stock price increases in value from $123 to $145 the percentage increase is:
(145-123)/123 * 100 = 17.9 per cent

Alternatively, if a stock price decreases in value from $145 to $123 the percentage decrease is:
(123-145)/145 * 100 = 15.2 per cent
Another example of finding the percentage difference of two numbers is -

147911 people total.
73066 are males
74845 are female.

To find the percentage of males, you take the number of males over the total:

73066/147911 = 0.493986 or about 49.40 per cent.
So the percentage of females must be 50.60 (so they add to 100)
74845 / 147911 = 0.506013 (or about 50.60 per cent).

Kyoko Katayama Profile
Kyoko Katayama answered
Find the difference between the two values.  Divide that difference by the former value.  Multiply that answer by 100 and add a percentage sign to view your answer in percentage form.
amber Jhon Profile
amber Jhon answered
Percentage decrease is calculated in the same manner as percentage change is calculated. Basically, percentage change is calculated when a base value is subtracted from the current value and the difference is divided by the base value:

Percentage change = (Current value - base value)/base value

If the percentage change is positive then it shows the percentage increase and if base value > current value then percentage change is Negative.
Anonymous Profile
Anonymous answered
To decrease it you first have to find out the amount, then you subtract it from the original amount; then you have you answer
Anonymous Profile
Anonymous answered
Original Number ("ON") is 10
Original Number Decreased ("OND") to 5

Subtract OND from ON ( 10 - 5 ) = 5
5 is the result of the subtraction between OND from ON

Next, divide the result (5) by the ON ( 5 รท 10 ) = .5
.5 is the result of the division between the OND/ON subtraction result and the ON

Finally, multiply this division result ( . 5 ) by 100 ( . 5 x 100 ) to attain the percentage decrease = 50 %
Anonymous Profile
Anonymous answered
The price of a cup of coffee was yesterday. Today, the price rose to . Find the percentage increase. Round your answer to the nearest tenth of a percent.

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