How to decrease the number 800
by 60% of its value?
Value of Percentage Decrease. New Value
- A percentage value is nothing but a fraction with a denominator of 100:
- 60% = 60/100 = 60 ÷ 100 = 0.6
- ...
- To decrease a positive number, subtract from it the 'Value of Percentage Decrease'.
- To decrease a negative number, don't subtract from it, but add to it the 'Value of Percentage Decrease'.
- ...
Value of Percentage Decrease =
Percentage of the Decrease % × The original value =
60% × 800
New Value =
The original value - Value of Percentage Decrease =
800 - (60% × 800)
1. Calculate the End Value
decreased by a percentage of its Initial Value
End Value =
800 - Value of Percentage Decrease =
800 - (60% × 800) =
800 - 60% × 800 =
(800 is a common factor)
(1 - 60%) × 800 =
(100% - 60%) × 800 =
40% × 800 =
40 ÷ 100 × 800 =
40 × 800 ÷ 100 =
32,000 ÷ 100 =
320
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 =
60% × 800
The second method:
Value of Percentage Decrease =
The original value - New Value
Value of Percentage Decrease =
480
The end value: 800 decreased by 60% percent = 320
Value of Percentage Decrease = 480