-76.2% is the change from 857 to 204
Calculation steps:
[( 204 - 857 ) ÷ 857] x 100 = -76.2%
Formula
Percentage change = [(204 - 857) / 857] x 100
Subtract the new number by the original number
204 - 857 = -653
-653 ÷ 857 = -0.7619603267211202
-0.7619603267211202 x 100 = -76.2%