-13.6% is the change from 647 to 559
Calculation steps:
[( 559 - 647 ) ÷ 647] x 100 = -13.6%
Formula
Percentage change = [(559 - 647) / 647] x 100
Subtract the new number by the original number
559 - 647 = -88
-88 ÷ 647 = -0.13601236476043277
-0.13601236476043277 x 100 = -13.6%