-31.6% is the change from 864 to 591
Calculation steps:
[( 591 - 864 ) ÷ 864] x 100 = -31.6%
Formula
Percentage change = [(591 - 864) / 864] x 100
Subtract the new number by the original number
591 - 864 = -273
-273 ÷ 864 = -0.3159722222222222
-0.3159722222222222 x 100 = -31.6%