How to decrease the number - 60
by - 1% of its value?
Value of Percentage Decrease. New Value
- A percentage value is nothing but a fraction with a denominator of 100:
- - 1% = - 1/100 = - 1 ÷ 100 = - 0.01
- ...
- To decrease a negative number, don't subtract from it, but add to it the 'Value of Percentage Decrease'.
- To decrease a positive number, subtract from it the 'Value of Percentage Decrease'.
- ...
Value of Percentage Decrease =
Percentage of the Decrease % × The original value =
- 1% × - 60
New Value =
The original value - Value of Percentage Decrease =
- 60 + (- 1% × - 60)
1. Calculate the End Value
decreased by a percentage of its Initial Value
End Value =
- 60 + Value of Percentage Decrease =
- 60 + (- 1% × - 60) =
- 60 - 1% × - 60 =
(- 60 is a common factor)
(1 - 1%) × - 60 =
(100% - 1%) × - 60 =
99% × - 60 =
99 ÷ 100 × - 60 =
99 × - 60 ÷ 100 =
- 5,940 ÷ 100 =
- 59.4
2. Value of Percentage Decrease
It can be calculated in two ways.
The first method:
Value of Percentage Decrease =
Percentage of the Decrease % × The original value =
- 1% × - 60
The second method:
Value of Percentage Decrease =
The original value - New Value
Value of Percentage Decrease =
- 0.6
The value of the decrease is negative, so we are actually dealing with a Percentage Increase.
The end value: - 60 decreased by - 1% percent = - 59.4
Value of Percentage Decrease = - 0.6