Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion
⭐ Merited by ImThour (2)
I get 42% for those 2021 numbers, but then again I don't math much anymore. 
47902 / 28775 = 1.66 -> 66%
sorry, that's NOT how % of change is calculated, but the result is correct anyway.
The formula is ((P2-P1)/P1)X100%=((47902-28775)/28775)X100%=66.4%
https://www.investopedia.com/terms/p/percentage-change.asp
sorry, if you learned calculating sums with fractions you will see that it's exactly the same as in the formula.
For keeping it short, I just allowed myself omitting the steps of deducting the 1 and changing to % which I thought everybody would understand (apparently not...)
((47902-28775)/28775) = 47902/28775 - 28775/28775 = 1.66 - 1 = 0.66