Percentages

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Percentages

Because who can remember if it's times or divide?

Soulver includes handy percentage phrases for all scenarios you're likely to run into.
Getting a percentage of a number
10% of 200                            | 20
25% × 200                             | 50
Adding a percentage to or taking a percentage off a number
200 + 10%                            | 220
10% on 200                           | 220
​
200 - 10%                             | 180
10% off 200                           | 180O
One number as a percentage of/on/off another number
20 is 10% of what                     | 200
180 is 10% off what                   | 200
220 is 10% on what                    | 200
Getting the change from one number to another, as a percent
50 to 75 is what %                        | 50%
40 to 90 as %                             | 125%
​
180 is what % off 200                     | 10%
180 is what % on 150                      | 20%
​
20 is what % of 200                       | 10%
20 as a % of 200                          | 10%
​
20/200 as %                               | 10%
20/200 %                                  | 10%
Calculations with mixed percentages & decimals
You can do calculations with pure percentages:
10% + 20%                                 | 30%
90% − 40%                                 | 50%
And you can add/subtract decimals & fractions to/from percentages. 1.0 is equivalent to 100%. 
30% + 0.4                                 | 70%
100% - 1/2                                | 50%
100% + 2 + 30%                            | 330%
Note that when multiplying a percentage by a number, the answer will always be a number (not a percentage), regardless of order:
50% × 30                                  | 15
30 × 50%                                  | 15
Fractions and Multipliers
The percentage in any of the aforementioned functions can also be replaced with a fraction:
2/3 of 600                       | 400
50 is 1/5 of what                | 250
You can also use "x", "multiple" or "multiplier" instead of percentage:
50 as x of 5                | 10x
2 as multiplier of 1        | 2x
2 as multiplier on 1        | 1x
1 as x off 2                | 0.5x
Multiplier change from one number to another
50 to 75 is what x                       | 1.5x
20 to 40 as x                            | 2x

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Calculations with mixed percentages & decimals

Fractions and Multipliers