-58.89% is the change from 866 to 356
Calculation steps:
[( 356 - 866 ) ÷ 866] x 100 = -58.89%
Formula
Percentage change = [(356 - 866) / 866] x 100
Subtract the new number by the original number
356 - 866 = -510
-510 ÷ 866 = -0.5889145496535797
-0.5889145496535797 x 100 = -58.89%