-80.34% is the change from 834 to 164
Calculation steps:
[( 164 - 834 ) ÷ 834] x 100 = -80.34%
Formula
Percentage change = [(164 - 834) / 834] x 100
Subtract the new number by the original number
164 - 834 = -670
-670 ÷ 834 = -0.8033573141486811
-0.8033573141486811 x 100 = -80.34%