-5.56% is the change from 647 to 611
Calculation steps:
[( 611 - 647 ) ÷ 647] x 100 = -5.56%
Formula
Percentage change = [(611 - 647) / 647] x 100
Subtract the new number by the original number
611 - 647 = -36
-36 ÷ 647 = -0.05564142194744977
-0.05564142194744977 x 100 = -5.56%