-81.54% is the change from 899 to 166
Calculation steps:
[( 166 - 899 ) ÷ 899] x 100 = -81.54%
Formula
Percentage change = [(166 - 899) / 899] x 100
Subtract the new number by the original number
166 - 899 = -733
-733 ÷ 899 = -0.8153503893214683
-0.8153503893214683 x 100 = -81.54%