-49.74% is the change from 778 to 391
Calculation steps:
[( 391 - 778 ) ÷ 778] x 100 = -49.74%
Formula
Percentage change = [(391 - 778) / 778] x 100
Subtract the new number by the original number
391 - 778 = -387
-387 ÷ 778 = -0.4974293059125964
-0.4974293059125964 x 100 = -49.74%