-64.35% is the change from 864 to 308
Calculation steps:
[( 308 - 864 ) ÷ 864] x 100 = -64.35%
Formula
Percentage change = [(308 - 864) / 864] x 100
Subtract the new number by the original number
308 - 864 = -556
-556 ÷ 864 = -0.6435185185185185
-0.6435185185185185 x 100 = -64.35%