-91.78% is the change from 864 to 71
Calculation steps:
[( 71 - 864 ) ÷ 864] x 100 = -91.78%
Formula
Percentage change = [(71 - 864) / 864] x 100
Subtract the new number by the original number
71 - 864 = -793
-793 ÷ 864 = -0.9178240740740741
-0.9178240740740741 x 100 = -91.78%