-16.07% is the change from 647 to 543
Calculation steps:
[( 543 - 647 ) ÷ 647] x 100 = -16.07%
Formula
Percentage change = [(543 - 647) / 647] x 100
Subtract the new number by the original number
543 - 647 = -104
-104 ÷ 647 = -0.160741885625966
-0.160741885625966 x 100 = -16.07%