Is there a formal definition for what '175% faster' means? Does '100% faster' mean its the same speed or twice the speed? Is '175% faster' 1.75X, 2.75X, 175X,

Is there a formal definition for what '175% faster' means? Does '100% faster' mean its the same speed or twice the speed? Is '175% faster' 1.75X, 2.75X, 175X, or something else entirely?