-7% is the change from 829 to 771
Calculation steps:
[( 771 - 829 ) ÷ 829] x 100 = -7%
Formula
Percentage change = [(771 - 829) / 829] x 100
Subtract the new number by the original number
771 - 829 = -58
-58 ÷ 829 = -0.06996381182147166
-0.06996381182147166 x 100 = -7%