-17.73% is the change from 677 to 557
Calculation steps:
[( 557 - 677 ) ÷ 677] x 100 = -17.73%
Formula
Percentage change = [(557 - 677) / 677] x 100
Subtract the new number by the original number
557 - 677 = -120
-120 ÷ 677 = -0.17725258493353027
-0.17725258493353027 x 100 = -17.73%