How to capture an output from a function in MATLAB?

I have a simple function

function increase(percent, number)

    low = number - number*percent;

end

I want to return low so I can use it as an argument for another function

mitoGen(asp, arg, increase(0.2, 234), glu)

Is there a way to do this?

As such:

function low = increase(percent, number)
  low = number - number*percent;
end

You can also return multiple items by having more than one thing to the left of the equal sign:

function [out1, out2] = foo(bar, baz)