-7.67% is the change from 834 to 770
Calculation steps:
[( 770 - 834 ) ÷ 834] x 100 = -7.67%
Formula
Percentage change = [(770 - 834) / 834] x 100
Subtract the new number by the original number
770 - 834 = -64
-64 ÷ 834 = -0.07673860911270983
-0.07673860911270983 x 100 = -7.67%