-58.85% is the change from 678 to 279
Calculation steps:
[( 279 - 678 ) ÷ 678] x 100 = -58.85%
Formula
Percentage change = [(279 - 678) / 678] x 100
Subtract the new number by the original number
279 - 678 = -399
-399 ÷ 678 = -0.588495575221239
-0.588495575221239 x 100 = -58.85%