-79.06% is the change from 678 to 142
Calculation steps:
[( 142 - 678 ) ÷ 678] x 100 = -79.06%
Formula
Percentage change = [(142 - 678) / 678] x 100
Subtract the new number by the original number
142 - 678 = -536
-536 ÷ 678 = -0.7905604719764012
-0.7905604719764012 x 100 = -79.06%