-56.8% is the change from 905 to 391
Calculation steps:
[( 391 - 905 ) ÷ 905] x 100 = -56.8%
Formula
Percentage change = [(391 - 905) / 905] x 100
Subtract the new number by the original number
391 - 905 = -514
-514 ÷ 905 = -0.5679558011049723
-0.5679558011049723 x 100 = -56.8%