-83.11% is the change from 829 to 140
Calculation steps:
[( 140 - 829 ) ÷ 829] x 100 = -83.11%
Formula
Percentage change = [(140 - 829) / 829] x 100
Subtract the new number by the original number
140 - 829 = -689
-689 ÷ 829 = -0.8311218335343787
-0.8311218335343787 x 100 = -83.11%