-91.55% is the change from 864 to 73
Calculation steps:
[( 73 - 864 ) ÷ 864] x 100 = -91.55%
Formula
Percentage change = [(73 - 864) / 864] x 100
Subtract the new number by the original number
73 - 864 = -791
-791 ÷ 864 = -0.9155092592592593
-0.9155092592592593 x 100 = -91.55%