When currency KRW is compared to currency IDR it is considered currency pair KRW/IDR which seeks to find out how many IDR are needed to acquire a KRW. After recent events that figure is at 10.99000.
For this transaction, the base currency is KRW and on the other hand, IDR is considered the counter currency (although it can also be called the quote currency).
In the last hours, we have been able to see that the price of this pair was at its maximum splendor with the number 11.03500 and, on the other hand, we found that the minimum price has been at 10.95000 , so, speaking in terms of variation, we can say that it has undergone a variation of 0.50000% due to the amount of difference of 0.05500.