-38.27% is the change from 891 to 550
Calculation steps:
[( 550 - 891 ) ÷ 891] x 100 = -38.27%
Formula
Percentage change = [(550 - 891) / 891] x 100
Subtract the new number by the original number
550 - 891 = -341
-341 ÷ 891 = -0.38271604938271603
-0.38271604938271603 x 100 = -38.27%