Math Question: Ex. Percentage Change from Month to Month
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 This topic has 4 replies, 2 voices, and was last updated 4 years, 10 months ago by MBBinWI.

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March 13, 2017 at 2:42 pm #55657
68rs327Participant@68rs327 Include @68rs327 in your post and this person will
be notified via email.I am calculating the percentage increase or decrease from January’s OEE to February’s OEE.
Example: January’s OEE was 64% and February’s OEE was 74% what percentage increase did OEE improve. I used the formula below, let me know your thoughts on if this is the correct way to calculate OEE % increase or decrease.
I come up with a 15.62% improvement in February vs. January.To find the percent change between two percentages:
Start by using the following difference quotient
(new number – current number) / current number
2. Then multiply the result in step (1.) by 100%.
Example:
64% to 74%
7464=10
10/64=.1562
.1562*100= 15.62%
0March 14, 2017 at 4:21 pm #201004
68rs327Guest@68rs327 Include @68rs327 in your post and this person will
be notified via email.Any Math guys here?
0March 14, 2017 at 7:51 pm #201005
MBBinWIParticipant@MBBinWI Include @MBBinWI in your post and this person will
be notified via email.@68rs327 – this is rather simple. Why are you looking for confirmation?
0March 14, 2017 at 8:14 pm #201006
68rs327Guest@68rs327 Include @68rs327 in your post and this person will
be notified via email.Someone at work told me it was wrong… I’d like another opinion.
0March 15, 2017 at 6:44 am #201009
MBBinWIParticipant@MBBinWI Include @MBBinWI in your post and this person will
be notified via email.@68rs327 – other than incorrect rounding, this is the correct answer. Your colleague is probably mixing up percentage points improved (which would be 10) with percent improved, which as you indicate is (0.74/0.64)1, which calculates out to 15.625 (or 15.63 rounded).
You and your coworker should talk about clear definitions of terms, as the two of you are not in agreement. Perhaps you both will learn something. At the very least, you will be communicating more precisely.
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