7.2% is the change from 820 to 879
Calculation steps:
[( 879 - 820 ) ÷ 820] x 100 = 7.2%
Formula
Percentage change = [(879 - 820) / 820] x 100
Subtract the new number by the original number
879 - 820 = 59
59 ÷ 820 = 0.07195121951219512
0.07195121951219512 x 100 = 7.2%