-56.12% is the change from 891 to 391
Calculation steps:
[( 391 - 891 ) ÷ 891] x 100 = -56.12%
Formula
Percentage change = [(391 - 891) / 891] x 100
Subtract the new number by the original number
391 - 891 = -500
-500 ÷ 891 = -0.5611672278338945
-0.5611672278338945 x 100 = -56.12%