-81.22% is the change from 905 to 170
Calculation steps:
[( 170 - 905 ) ÷ 905] x 100 = -81.22%
Formula
Percentage change = [(170 - 905) / 905] x 100
Subtract the new number by the original number
170 - 905 = -735
-735 ÷ 905 = -0.8121546961325967
-0.8121546961325967 x 100 = -81.22%