-80.53% is the change from 837 to 163
Calculation steps:
[( 163 - 837 ) ÷ 837] x 100 = -80.53%
Formula
Percentage change = [(163 - 837) / 837] x 100
Subtract the new number by the original number
163 - 837 = -674
-674 ÷ 837 = -0.8052568697729988
-0.8052568697729988 x 100 = -80.53%