-81.19% is the change from 904 to 170
Calculation steps:
[( 170 - 904 ) ÷ 904] x 100 = -81.19%
Formula
Percentage change = [(170 - 904) / 904] x 100
Subtract the new number by the original number
170 - 904 = -734
-734 ÷ 904 = -0.8119469026548672
-0.8119469026548672 x 100 = -81.19%