-99.41% is the change from 678 to 4
Calculation steps:
[( 4 - 678 ) ÷ 678] x 100 = -99.41%
Formula
Percentage change = [(4 - 678) / 678] x 100
Subtract the new number by the original number
4 - 678 = -674
-674 ÷ 678 = -0.9941002949852508
-0.9941002949852508 x 100 = -99.41%