-49.55% is the change from 775 to 391
Calculation steps:
[( 391 - 775 ) ÷ 775] x 100 = -49.55%
Formula
Percentage change = [(391 - 775) / 775] x 100
Subtract the new number by the original number
391 - 775 = -384
-384 ÷ 775 = -0.49548387096774194
-0.49548387096774194 x 100 = -49.55%