-83.11% is the change from 983 to 166
Calculation steps:
[( 166 - 983 ) ÷ 983] x 100 = -83.11%
Formula
Percentage change = [(166 - 983) / 983] x 100
Subtract the new number by the original number
166 - 983 = -817
-817 ÷ 983 = -0.8311291963377416
-0.8311291963377416 x 100 = -83.11%