-96.02% is the change from 678 to 27
Calculation steps:
[( 27 - 678 ) ÷ 678] x 100 = -96.02%
Formula
Percentage change = [(27 - 678) / 678] x 100
Subtract the new number by the original number
27 - 678 = -651
-651 ÷ 678 = -0.9601769911504425
-0.9601769911504425 x 100 = -96.02%