-88.11% is the change from 866 to 103
Calculation steps:
[( 103 - 866 ) ÷ 866] x 100 = -88.11%
Formula
Percentage change = [(103 - 866) / 866] x 100
Subtract the new number by the original number
103 - 866 = -763
-763 ÷ 866 = -0.8810623556581986
-0.8810623556581986 x 100 = -88.11%