-57.74% is the change from 866 to 366
Calculation steps:
[( 366 - 866 ) ÷ 866] x 100 = -57.74%
Formula
Percentage change = [(366 - 866) / 866] x 100
Subtract the new number by the original number
366 - 866 = -500
-500 ÷ 866 = -0.5773672055427251
-0.5773672055427251 x 100 = -57.74%