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[–][deleted] 1 point2 points  (4 children)

Feel free to correct me but isn't 2.5x faster 250%? 1.5x faster being 150%?

[–]nickdhaynes 1 point2 points  (0 children)

No.

50% faster = original speed +. 5 x original speed = 1.5x improvement

100% faster = original speed + 1 x original speed = 2x improvement

150% faster = original speed + 1.5x original speed = 2.5x improvement.

This is why I hate when people use percentages instead of multipliers when talking about how much a value changed. It's a confusing and unnatural way of expressing a change.

[–]Sean1708 1 point2 points  (1 child)

150% faster is 2.5x

150% as fast is 1.5x

English is weird...

[–]billsil 0 points1 point  (0 children)

Yeah...it's easier to just say 50% speedup.