-77.6% is the change from 857 to 192
Calculation steps:
[( 192 - 857 ) ÷ 857] x 100 = -77.6%
Formula
Percentage change = [(192 - 857) / 857] x 100
Subtract the new number by the original number
192 - 857 = -665
-665 ÷ 857 = -0.7759626604434072
-0.7759626604434072 x 100 = -77.6%