-7.12% is the change from 829 to 770
Calculation steps:
[( 770 - 829 ) ÷ 829] x 100 = -7.12%
Formula
Percentage change = [(770 - 829) / 829] x 100
Subtract the new number by the original number
770 - 829 = -59
-59 ÷ 829 = -0.07117008443908324
-0.07117008443908324 x 100 = -7.12%