Delta % in benchmark

[radumarias]

Values are in microseconds (μs). The delta is the percentage difference.

For ex. for time if we have Y values like this

renctypt: [1, 5, 10]
pyflocker: [1.5, 10, 11]

Then our Y will be

[50, 200, 10]

This is how much percentage slower is.

Will be the percentage difference between them. Same for MB will show percentage difference on how faster is.