-80.43% is the change from 838 to 164
Calculation steps:
[( 164 - 838 ) ÷ 838] x 100 = -80.43%
Formula
Percentage change = [(164 - 838) / 838] x 100
Subtract the new number by the original number
164 - 838 = -674
-674 ÷ 838 = -0.8042959427207638
-0.8042959427207638 x 100 = -80.43%