-18.64% is the change from 676 to 550
Calculation steps:
[( 550 - 676 ) ÷ 676] x 100 = -18.64%
Formula
Percentage change = [(550 - 676) / 676] x 100
Subtract the new number by the original number
550 - 676 = -126
-126 ÷ 676 = -0.1863905325443787
-0.1863905325443787 x 100 = -18.64%