How to decrease the number - 3
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% × - 3
New Value =
The original value - Value of Percentage Decrease =
- 3 + (1% × - 3)
1. Calculate the End Value
decreased by a percentage of its Initial Value
End Value =
- 3 + Value of Percentage Decrease =
- 3 + (1% × - 3) =
- 3 + 1% × - 3 =
(- 3 is a common factor)
(1 + 1%) × - 3 =
(100% + 1%) × - 3 =
101% × - 3 =
101 ÷ 100 × - 3 =
101 × - 3 ÷ 100 =
- 303 ÷ 100 =
- 3.03
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% × - 3
The second method:
Value of Percentage Decrease =
The original value - New Value
Value of Percentage Decrease =
0.03
The end value: - 3 decreased by 1% percent = - 3.03
Value of Percentage Decrease = 0.03