Inflation rate depreciation rate appreciation rate Inflation rate = (current price - original price) / depreciation rate of current currency = (current price - original price) / current price formula meaning? Appreciation rate formula?

Inflation rate depreciation rate appreciation rate Inflation rate = (current price - original price) / depreciation rate of current currency = (current price - original price) / current price formula meaning? Appreciation rate formula?

Inflation rate = (current price - original price) / current price, I think it should be in addition to the original price. It means how much the price of a commodity has increased compared with the original price. For example, the original price of a commodity is 10 yuan, the current price is 12, (12-10) / 10 = 20%, and the inflation rate is 20% (the price has increased by 20%)
The depreciation rate of paper currency = (current price - original price) / current price. For example, the original price of goods is 10 yuan, the current price is 12 yuan, (12-10) / 12 = 1 / 6, and the depreciation rate is 1 / 6. That is to say, 1 yuan is only equivalent to 5 / 6 of the previous one, and 12 yuan is equivalent to 10 yuan
Appreciation rate = = (original price current price) / current price. For example, the original price of a commodity is 10 yuan, the current price is 8 yuan (10-8) / 8 = 1 / 4, that is, the current 1 yuan is equivalent to the previous 5 / 4 yuan, 8 yuan is equivalent to the previous 10 yuan