-21.47% is the change from 829 to 651
Calculation steps:
[( 651 - 829 ) ÷ 829] x 100 = -21.47%
Formula
Percentage change = [(651 - 829) / 829] x 100
Subtract the new number by the original number
651 - 829 = -178
-178 ÷ 829 = -0.2147165259348613
-0.2147165259348613 x 100 = -21.47%