-80.36% is the change from 835 to 164
Calculation steps:
[( 164 - 835 ) ÷ 835] x 100 = -80.36%
Formula
Percentage change = [(164 - 835) / 835] x 100
Subtract the new number by the original number
164 - 835 = -671
-671 ÷ 835 = -0.8035928143712575
-0.8035928143712575 x 100 = -80.36%