-51.61% is the change from 808 to 391
Calculation steps:
[( 391 - 808 ) ÷ 808] x 100 = -51.61%
Formula
Percentage change = [(391 - 808) / 808] x 100
Subtract the new number by the original number
391 - 808 = -417
-417 ÷ 808 = -0.5160891089108911
-0.5160891089108911 x 100 = -51.61%