-81.07% is the change from 898 to 170
Calculation steps:
[( 170 - 898 ) ÷ 898] x 100 = -81.07%
Formula
Percentage change = [(170 - 898) / 898] x 100
Subtract the new number by the original number
170 - 898 = -728
-728 ÷ 898 = -0.8106904231625836
-0.8106904231625836 x 100 = -81.07%