Use your powers of observation and identify algorithm for decode/dehashing the following data.
Encoded DATA : NDg3MDQxNmU2NDcyNmYyMzM1MzgzMjMxMzAzMjMyMzMzMzM1MjM=Hashed DATA : 47e8d43c921f6f23527c5c59675da414f25381c0