-5.67% is the change from 688 to 649
Calculation steps:
[( 649 - 688 ) ÷ 688] x 100 = -5.67%
Formula
Percentage change = [(649 - 688) / 688] x 100
Subtract the new number by the original number
649 - 688 = -39
-39 ÷ 688 = -0.056686046511627904
-0.056686046511627904 x 100 = -5.67%