-88.43% is the change from 864 to 100
Calculation steps:
[( 100 - 864 ) ÷ 864] x 100 = -88.43%
Formula
Percentage change = [(100 - 864) / 864] x 100
Subtract the new number by the original number
100 - 864 = -764
-764 ÷ 864 = -0.8842592592592593
-0.8842592592592593 x 100 = -88.43%