16.81% is the change from 821 to 959
Calculation steps:
[( 959 - 821 ) ÷ 821] x 100 = 16.81%
Formula
Percentage change = [(959 - 821) / 821] x 100
Subtract the new number by the original number
959 - 821 = 138
138 ÷ 821 = 0.16808769792935443
0.16808769792935443 x 100 = 16.81%