-56.47% is the change from 866 to 377
Calculation steps:
[( 377 - 866 ) ÷ 866] x 100 = -56.47%
Formula
Percentage change = [(377 - 866) / 866] x 100
Subtract the new number by the original number
377 - 866 = -489
-489 ÷ 866 = -0.5646651270207852
-0.5646651270207852 x 100 = -56.47%