Percentage Facts
What does the term percentage mean?
Parts of 100
12%
3/25
45%
0.45
10%
1:10
Pre-diet weight is 300 pounds. After one-month, new weight is 240 pounds. What is the percent of change?
20%
How do you convert a percentage to a fraction?
Drop the sign, put the number over 100, and reduce to lowest terms.
50%
1/2
26%
0.26
95%
19:20
The patient drank 45% of his 8-ounce water. How much did he drink?
3.6
How do you turn a percent to a decimal?
Drop the percent sign, divide by 100 (move the decimal 2 places to the LEFT)
46%
23/50
46.3%
0.463
66%
33:50
14 is what percent of 50?
28%
How do you turn a percent to a ratio?
Drop the percent sign, covert to fraction, reduce to lowest terms, use numerator as first number, denominator as second number and separate the two with a colon (:).
20%
1/5
83%
0.83
17%
17:100
Pre-diet, Mrs. Jane's waist measurement was 52 inches. After 6-months, her new waist measurement is 40 inches. What is the percent of change? *Round to nearest whole number.
23%
How do you change a fraction to a percentage?
Multiply fraction by 100, reduce, & add the %
OR
Convert fraction to a decimal and multiply by 100 (move the decimal 2 spaces to the RIGHT)
99%
99/100
5%
0.05
51%
51:100
60% of 120
72
How do you convert ratio to a percent?
Convert to fraction, multiply by 100, reduce, and add %
OR
Convert to fraction, convert fraction to decimal, multiply by 100 (move 2 to the right), and add %
75%
3/4
110.45%
1.1045
20%
1:5
The nurse has an order for D25W 1000ml to infuse at 125mL per hour. The nurse knows that D25W is Dextrose 25%. How many grams of dextrose is in the 1000mL IV to be infused?
250G
How do you determine the given percent of a number?
Convert percent to a fraction or decimal then multiply by the other number.
87%
87/100
81%
0.81
85%
17:20
You have 0.45% Saline in a 500mL bag. How many grams are in your bag of fluids? *Write full answer*
2.25 G
How do you determine the percent between 2 numbers?
The word following "of" is the denominator, the other is the numerator, convert fraction to decimal, multiply by 100, and add the percent sign.
13%
13/100
456%
4.56
36%
9:25
IV: 1000 mL
Solution: 3% Dextrose
How many grams of dextrose will your IV contain?
30
How do you calculate the percent of change?
Make a fraction of change with the difference between the 2 numbers as the numerator and the denominator as the old/beginning number, multiply by 100 (move decimal 2 to the RIGHT), and add %.
65%
13/20
96.7%
0.967
44%
11:25
If you have a 1000mL bad of fluids that contains a total of 300G of dextrose. What is your percentage per 100 mL of fluid?
30%