-50.32% is the change from 787 to 391
Calculation steps:
[( 391 - 787 ) ÷ 787] x 100 = -50.32%
Formula
Percentage change = [(391 - 787) / 787] x 100
Subtract the new number by the original number
391 - 787 = -396
-396 ÷ 787 = -0.5031766200762389
-0.5031766200762389 x 100 = -50.32%