-77.7% is the change from 861 to 192
Calculation steps:
[( 192 - 861 ) ÷ 861] x 100 = -77.7%
Formula
Percentage change = [(192 - 861) / 861] x 100
Subtract the new number by the original number
192 - 861 = -669
-669 ÷ 861 = -0.7770034843205574
-0.7770034843205574 x 100 = -77.7%