50% is the change from 586 to 879
Calculation steps:
[( 879 - 586 ) ÷ 586] x 100 = 50%
Formula
Percentage change = [(879 - 586) / 586] x 100
Subtract the new number by the original number
879 - 586 = 293
293 ÷ 586 = 0.5
0.5 x 100 = 50%
Example