-15.87% is the change from 687 to 578
Calculation steps:
[( 578 - 687 ) ÷ 687] x 100 = -15.87%
Formula
Percentage change = [(578 - 687) / 687] x 100
Subtract the new number by the original number
578 - 687 = -109
-109 ÷ 687 = -0.1586608442503639
-0.1586608442503639 x 100 = -15.87%