-81.89% is the change from 900 to 163
Calculation steps:
[( 163 - 900 ) ÷ 900] x 100 = -81.89%
Formula
Percentage change = [(163 - 900) / 900] x 100
Subtract the new number by the original number
163 - 900 = -737
-737 ÷ 900 = -0.8188888888888889
-0.8188888888888889 x 100 = -81.89%