-66.63% is the change from 866 to 289
Calculation steps:
[( 289 - 866 ) ÷ 866] x 100 = -66.63%
Formula
Percentage change = [(289 - 866) / 866] x 100
Subtract the new number by the original number
289 - 866 = -577
-577 ÷ 866 = -0.6662817551963048
-0.6662817551963048 x 100 = -66.63%