-17.78% is the change from 675 to 555
Calculation steps:
[( 555 - 675 ) ÷ 675] x 100 = -17.78%
Formula
Percentage change = [(555 - 675) / 675] x 100
Subtract the new number by the original number
555 - 675 = -120
-120 ÷ 675 = -0.17777777777777778
-0.17777777777777778 x 100 = -17.78%