-60.28% is the change from 866 to 344
Calculation steps:
[( 344 - 866 ) ÷ 866] x 100 = -60.28%
Formula
Percentage change = [(344 - 866) / 866] x 100
Subtract the new number by the original number
344 - 866 = -522
-522 ÷ 866 = -0.6027713625866051
-0.6027713625866051 x 100 = -60.28%