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[bnold]

Another ‘non-web source’
Financial Intelligence by Karen Berman & Joe Knight

 

[Snobdds]

Your chart.

12/2021 - $70
6/2022 - $123
3/2023 - $70


There was a 75% increase in value between 12/2021 & 6/2022

There was a 43% decrease in value between 6/2022 and 2/2023

If we are discussing percent change over time for a value. This is how it works.

If it was 50% decrease in value from 6/2022 to 3/2023 would have bee 61.50, 75% decrease in value 30.8, 100% decrease in value 0.

… the order of the values in the numerator doesn’t matter much, the correct denominator value is what is important, original/first value always goes in the denominator, provided you can figure out a negative number…


I don’t have any base math texts from grade school for a pure percent change formula that isn’t ‘from the web’, but here is a percent change snippet from Mechanics of Materials by RC Hibbeler from an entry level engineering class.

View attachment 820211


Not sure what you are trying to prove with this:

70 * 1.43 = 100.10
70* 1.75 = 122.5

70 with a 75% increase is indeed the same as 12/2021 to 6/2022.

(123-70)/70 * 100% = ~75%

Your proof however doesn’t reflect percent change.

See, in post 40 I defined what I was calculating, which is the last cycle of peak to trough.

Then you come along and have to redefine what I was calculating to make your point of: Trough to peak, to trough again.

You change the goal posts.

All that *100 at the end does is move a decimal point over by 2. However I express the solution in a %, which does the *100 automatically. I know that .75 expressed as a % is 75%. See post 40 again to see my solution is in a %.

Your not going to get me in a game of gotcha with math. I'm an Actuary, I do math all day every day for a living.

 

[MossRoad]

Here's the things most of us see....

$123 high

$70 low

That's a difference of $53

$53 is about 43% of $123

Most of us see a 50% price decline from $123 as leaving it at $61.50.

A 75% price decline from $123 would be leaving it at $30.75.

Without slinging insults, is there a different way of explaining it to come up with another answer?

 

[Snobdds]

Here's the things most of us see....

$123 high

$70 low

That's a difference of $53

$53 is about 43% of $123

Most of us see a 50% price decline from $123 as leaving it at $61.50.

A 75% price decline from $123 would be leaving it at $30.75.

Without slinging insults, is there a different way of explaining it to come up with another answer?

see post 43.

 

[MossRoad]

see post 43.

I did. We all did. None of us understand what you're trying to convey there.

Haven't seen one person get the lightbulb turned on and say "Ah, now I get it."

Most of us believe if something costs a dollar, and then it costs 50 cents, that's a 50% price drop.

If something costs $123, and then it costs $70, that's a 43% price drop.

 

[bnold]

See, in post 40 I defined what I was calculating, which is the last cycle of peak to trough.

Then you come along and have to redefine what I was calculating to make your point of: Trough to peak, to trough again.

You change the goal posts.

All that *100 at the end does is move a decimal point over by 2. However I express the solution in a %, which does the *100 automatically. I know that .75 expressed as a % is 75%. See post 40 again to see my solution is in a %.

Your not going to get me in a game of gotcha with math. I'm an Actuary, I do math all day every day for a living.

Glad you figured out decimals to percentage as an Actuary.

“So if we take the peak of 123 and the low of 70, which was March of 22-March of 23 that is a 75% decline of price.”

The goal posts you set above.
Time and values.

$123 - March 22
$70 - March 23

I added the other through to peak for clarity of point on calculations.

 

[Snobdds]

Haven't seen one person get the lightbulb turned on and say "Ah, now I get it."

Moss...you've always been a reflexive contrarian.

If you understood post 43...I mean really understood it. You would have your ah ha moment. But again, contrarian.

It dropped by 75%. I don't know how else I can make you understand that.

 

[Snobdds]

Glad you figured out decimals to percentage as an Actuary.

“So if we take the peak of 123 and the low of 70, which was March of 22-March of 23 that is a 75% decline of price.”

The goal posts you set above.
Time and values.

$123 - March 22
$70 - March 23

I added the other through to peak for clarity of point on calculations.

I'm glad you finally figured out all my solutions were in the proper percentages already.

Good job.

 

[MossRoad]

Moss...you've always been a reflexive contrarian.

If you understood post 43...I mean really understood it. You would have your ah ha moment. But again, contrarian.

It dropped by 75%. I don't know how else I can make you understand that.

I don't understand post 43, that's why I'm asking.

 

[Snobdds]

I don't understand post 43, that's why I'm asking.

One more time...

If something goes from 123 to 70, how is that expressed in as a % change?

Well...

(123-70)/70 = 75% (I already did the x100 to express as a % for mr. bnold's hang-up). The price went down 75%.

We can check that number to make sure. To check you can do it two ways:

From the starting point of 70: 70*1.75 = 123
From the ending point of 123: 123/1.75 = 70

I hope you can see the multiplicative relationship here. It dosen't matter where starting point is, the relative ratio works either way. I explained earlier how to add (multiply) and subtract (divide) to keep the % change a constant ratio between two points.

I really have no other idea how to make you understand.