-5.26% is the change from 647 to 613
Calculation steps:
[( 613 - 647 ) ÷ 647] x 100 = -5.26%
Formula
Percentage change = [(613 - 647) / 647] x 100
Subtract the new number by the original number
613 - 647 = -34
-34 ÷ 647 = -0.05255023183925812
-0.05255023183925812 x 100 = -5.26%