-80.92% is the change from 891 to 170
Calculation steps:
[( 170 - 891 ) ÷ 891] x 100 = -80.92%
Formula
Percentage change = [(170 - 891) / 891] x 100
Subtract the new number by the original number
170 - 891 = -721
-721 ÷ 891 = -0.8092031425364759
-0.8092031425364759 x 100 = -80.92%