How to play Percentage Calculator.
There are always 3 figures when calculating percentage. They are the Big number, the Small number and the Percentage itself. We may type two of this number and find the third one. This is done from the "hints" in the app.
To win the game and get new Knowledge Level, we need to make calculations for all five places, where
percentage is used. The two left green fields are where the numbers are typed. Just click there and use the keyboard. Then after clicking "Calculate" button, the value will appear in the third most right green field.
Use "Next" button or the fields icon to do the rest of them.
Know where percentages are used and how to calculate them.
Winning the game rewards +1 Knowledge Level
The download version(bottom of the page) include an executable file for Windows OS with local levels only.
Here is a gameplay movie on YouTube.