-50.13% is the change from 780 to 389
Calculation steps:
[( 389 - 780 ) ÷ 780] x 100 = -50.13%
Formula
Percentage change = [(389 - 780) / 780] x 100
Subtract the new number by the original number
389 - 780 = -391
-391 ÷ 780 = -0.5012820512820513
-0.5012820512820513 x 100 = -50.13%