-12.52% is the change from 647 to 566
Calculation steps:
[( 566 - 647 ) ÷ 647] x 100 = -12.52%
Formula
Percentage change = [(566 - 647) / 647] x 100
Subtract the new number by the original number
566 - 647 = -81
-81 ÷ 647 = -0.125193199381762
-0.125193199381762 x 100 = -12.52%