-81.7% is the change from 1000 to 183
Calculation steps:
[( 183 - 1000 ) ÷ 1000] x 100 = -81.7%
Formula
Percentage change = [(183 - 1000) / 1000] x 100
Subtract the new number by the original number
183 - 1000 = -817
-817 ÷ 1000 = -0.817
-0.817 x 100 = -81.7%