-78.06% is the change from 866 to 190
Calculation steps:
[( 190 - 866 ) ÷ 866] x 100 = -78.06%
Formula
Percentage change = [(190 - 866) / 866] x 100
Subtract the new number by the original number
190 - 866 = -676
-676 ÷ 866 = -0.7806004618937644
-0.7806004618937644 x 100 = -78.06%