-19.24% is the change from 681 to 550
Calculation steps:
[( 550 - 681 ) ÷ 681] x 100 = -19.24%
Formula
Percentage change = [(550 - 681) / 681] x 100
Subtract the new number by the original number
550 - 681 = -131
-131 ÷ 681 = -0.19236417033773862
-0.19236417033773862 x 100 = -19.24%