-72.98% is the change from 866 to 234
Calculation steps:
[( 234 - 866 ) ÷ 866] x 100 = -72.98%
Formula
Percentage change = [(234 - 866) / 866] x 100
Subtract the new number by the original number
234 - 866 = -632
-632 ÷ 866 = -0.7297921478060047
-0.7297921478060047 x 100 = -72.98%