-49.81% is the change from 779 to 391
Calculation steps:
[( 391 - 779 ) ÷ 779] x 100 = -49.81%
Formula
Percentage change = [(391 - 779) / 779] x 100
Subtract the new number by the original number
391 - 779 = -388
-388 ÷ 779 = -0.4980744544287548
-0.4980744544287548 x 100 = -49.81%