3.17% is the change from 821 to 847
Calculation steps:
[( 847 - 821 ) ÷ 821] x 100 = 3.17%
Formula
Percentage change = [(847 - 821) / 821] x 100
Subtract the new number by the original number
847 - 821 = 26
26 ÷ 821 = 0.031668696711327646
0.031668696711327646 x 100 = 3.17%