-8.45% is the change from 686 to 628
Calculation steps:
[( 628 - 686 ) ÷ 686] x 100 = -8.45%
Formula
Percentage change = [(628 - 686) / 686] x 100
Subtract the new number by the original number
628 - 686 = -58
-58 ÷ 686 = -0.08454810495626822
-0.08454810495626822 x 100 = -8.45%