Please help me convert time into a % increase

[Unconformed]

Hi all

I am creating an infographic and I'm not confident about something. the question is in tow parts.

1) something that took 10 min and 45 seconds now takes 1 min and 25 seconds

2) something that took 16 min and 45 seconds now takes 1min and 15 seconds

What is the % improvement? I converted the first one to seconds.

10 * 60 = 400 + 45 = 656 seconds.
60 + 25 = 85 seconds.

do I calculate how much of a % 85 is of 656 and - that from 100 to get the % increase? Another person hereseems to think that

10 minutes 45 seconds reduced to 1 minute 25 seconds is a 86.82%decrease.
and

16 minutes 45 seconds reduced to 1 minute 15 secondsis a 92.54% decrease.

But that does not fly with me.

Thanks in advance!

 

[HallsofIvy]

Did this other person say how he/she got an 82.62% decrease?

Yes, you can calculate that 85 is 85/656= 0.129 so that the decrease is 1- 0.129= 0.87 or 87%

Or, and I would consider this slightly more "logical", calculate that the actual decrease is 656- 85= 571 and then that is 571/656= 0.87 or 87% decrease again.

 

[stapel]

What is the % improvement?

How is "improvement" defined, mathematically?

But that does not fly with me.

Why not? Please be precise. Thank you!

 

[Steven G]

Hi all

I am creating an infographic and I'm not confident about something. the question is in tow parts.

1) something that took 10 min and 45 seconds now takes 1 min and 25 seconds

2) something that took 16 min and 45 seconds now takes 1min and 15 seconds

What is the % improvement? I converted the first one to seconds.

10 * 60 = 400 + 45 = 656 seconds. No! 10*60 does not equal 400+45. 10*60=600 while 400+45=445. 400 + 45 does not equal 656.
60 + 25 = 85 seconds. Correct

do I calculate how much of a % 85 is of 656 and - that from 100 to get the % increase? Another person hereseems to think that

10 minutes 45 seconds reduced to 1 minute 25 seconds is a 86.82%decrease.
and

16 minutes 45 seconds reduced to 1 minute 15 secondsis a 92.54% decrease.

But that does not fly with me.

Thanks in advance!

See red above

 

[Unconformed]

How is "improvement" defined, mathematically?


Why not? Please be precise. Thank you!

Hi

Thanks for reply.

To answer your question, a task that took X now takes Y. How can we represent that as a %. For example, this task is now 87% faster than before.

Regards,

Unconformed

 

[Unconformed]

See red above

TY I did not type correctly.

 

[Unconformed]

10 * 60 + 45 = 600 + 45 = 645

You are really "unconformed"

TY, I understand this. I mistyped.

PS this task is in seconds, hence my conversion, but I am guessing you know this already.

 

[Unconformed]

Did this other person say how he/she got an 82.62% decrease?

Yes, you can calculate that 85 is 85/656= 0.129 so that the decrease is 1- 0.129= 0.87 or 87%

Or, and I would consider this slightly more "logical", calculate that the actual decrease is 656- 85= 571 and then that is 571/656= 0.87 or 87% decrease again.

Hi - no they said they used an online calculator.

How can we express this as an increase in efficiency? Can we say that the task is now 87% faster?