-64.62% is the change from 879 to 311
Calculation steps:
[( 311 - 879 ) ÷ 879] x 100 = -64.62%
Formula
Percentage change = [(311 - 879) / 879] x 100
Subtract the new number by the original number
311 - 879 = -568
-568 ÷ 879 = -0.646188850967008
-0.646188850967008 x 100 = -64.62%