-64.71% is the change from 867 to 306
Calculation steps:
[( 306 - 867 ) ÷ 867] x 100 = -64.71%
Formula
Percentage change = [(306 - 867) / 867] x 100
Subtract the new number by the original number
306 - 867 = -561
-561 ÷ 867 = -0.6470588235294118
-0.6470588235294118 x 100 = -64.71%