-9.2% is the change from 859 to 780
Calculation steps:
[( 780 - 859 ) ÷ 859] x 100 = -9.2%
Formula
Percentage change = [(780 - 859) / 859] x 100
Subtract the new number by the original number
780 - 859 = -79
-79 ÷ 859 = -0.0919674039580908
-0.0919674039580908 x 100 = -9.2%