-64.69% is the change from 878 to 310
Calculation steps:
[( 310 - 878 ) ÷ 878] x 100 = -64.69%
Formula
Percentage change = [(310 - 878) / 878] x 100
Subtract the new number by the original number
310 - 878 = -568
-568 ÷ 878 = -0.6469248291571754
-0.6469248291571754 x 100 = -64.69%