-49.54% is the change from 866 to 437
Calculation steps:
[( 437 - 866 ) ÷ 866] x 100 = -49.54%
Formula
Percentage change = [(437 - 866) / 866] x 100
Subtract the new number by the original number
437 - 866 = -429
-429 ÷ 866 = -0.4953810623556582
-0.4953810623556582 x 100 = -49.54%