-26.44% is the change from 866 to 637
Calculation steps:
[( 637 - 866 ) ÷ 866] x 100 = -26.44%
Formula
Percentage change = [(637 - 866) / 866] x 100
Subtract the new number by the original number
637 - 866 = -229
-229 ÷ 866 = -0.2644341801385681
-0.2644341801385681 x 100 = -26.44%