-10.36% is the change from 859 to 770
Calculation steps:
[( 770 - 859 ) ÷ 859] x 100 = -10.36%
Formula
Percentage change = [(770 - 859) / 859] x 100
Subtract the new number by the original number
770 - 859 = -89
-89 ÷ 859 = -0.10360884749708964
-0.10360884749708964 x 100 = -10.36%