-64.58% is the change from 878 to 311
Calculation steps:
[( 311 - 878 ) ÷ 878] x 100 = -64.58%
Formula
Percentage change = [(311 - 878) / 878] x 100
Subtract the new number by the original number
311 - 878 = -567
-567 ÷ 878 = -0.6457858769931663
-0.6457858769931663 x 100 = -64.58%