-27.89% is the change from 864 to 623
Calculation steps:
[( 623 - 864 ) ÷ 864] x 100 = -27.89%
Formula
Percentage change = [(623 - 864) / 864] x 100
Subtract the new number by the original number
623 - 864 = -241
-241 ÷ 864 = -0.2789351851851852
-0.2789351851851852 x 100 = -27.89%