-12.83% is the change from 678 to 591
Calculation steps:
[( 591 - 678 ) ÷ 678] x 100 = -12.83%
Formula
Percentage change = [(591 - 678) / 678] x 100
Subtract the new number by the original number
591 - 678 = -87
-87 ÷ 678 = -0.12831858407079647
-0.12831858407079647 x 100 = -12.83%