-15.61% is the change from 647 to 546
Calculation steps:
[( 546 - 647 ) ÷ 647] x 100 = -15.61%
Formula
Percentage change = [(546 - 647) / 647] x 100
Subtract the new number by the original number
546 - 647 = -101
-101 ÷ 647 = -0.1561051004636785
-0.1561051004636785 x 100 = -15.61%