-0.29% is the change from 678 to 676
Calculation steps:
[( 676 - 678 ) ÷ 678] x 100 = -0.29%
Formula
Percentage change = [(676 - 678) / 678] x 100
Subtract the new number by the original number
676 - 678 = -2
-2 ÷ 678 = -0.0029498525073746312
-0.0029498525073746312 x 100 = -0.29%