-75.45% is the change from 831 to 204
Calculation steps:
[( 204 - 831 ) ÷ 831] x 100 = -75.45%
Formula
Percentage change = [(204 - 831) / 831] x 100
Subtract the new number by the original number
204 - 831 = -627
-627 ÷ 831 = -0.7545126353790613
-0.7545126353790613 x 100 = -75.45%