-53.7% is the change from 866 to 401
Calculation steps:
[( 401 - 866 ) ÷ 866] x 100 = -53.7%
Formula
Percentage change = [(401 - 866) / 866] x 100
Subtract the new number by the original number
401 - 866 = -465
-465 ÷ 866 = -0.5369515011547344
-0.5369515011547344 x 100 = -53.7%