i think it's a fraction.......
Synecdoche: a substitution of a part of something for the whole or the whole for a part.
The answer is "metonym"
The figure of speech used to represent the whole of a part or part of a whole is called synecdoche. It involves using a specific part of something to represent the entire thing or using the entire thing to represent just a part of it.
A fraction or decimal or percent
Pie chart
drect proportion
A pie chart
PALLET
decimals are used when you have part of a whole for examle .362598798 is part of a whole
Pie graphs are used when a part of something total is represented in relation to the whole thing
Ball!
Are you thinking of the rhetorical device of synecdoche, wherein a part stands for the whole or the whole for a part?