-79.97% is the change from 779 to 156
Calculation steps:
[( 156 - 779 ) ÷ 779] x 100 = -79.97%
Formula
Percentage change = [(156 - 779) / 779] x 100
Subtract the new number by the original number
156 - 779 = -623
-623 ÷ 779 = -0.7997432605905006
-0.7997432605905006 x 100 = -79.97%