-85.39% is the change from 999 to 146
Calculation steps:
[( 146 - 999 ) ÷ 999] x 100 = -85.39%
Formula
Percentage change = [(146 - 999) / 999] x 100
Subtract the new number by the original number
146 - 999 = -853
-853 ÷ 999 = -0.8538538538538538
-0.8538538538538538 x 100 = -85.39%