-80.68% is the change from 849 to 164
Calculation steps:
[( 164 - 849 ) ÷ 849] x 100 = -80.68%
Formula
Percentage change = [(164 - 849) / 849] x 100
Subtract the new number by the original number
164 - 849 = -685
-685 ÷ 849 = -0.806831566548881
-0.806831566548881 x 100 = -80.68%