18.81% is the change from 691 to 821
Calculation steps:
[( 821 - 691 ) ÷ 691] x 100 = 18.81%
Formula
Percentage change = [(821 - 691) / 691] x 100
Subtract the new number by the original number
821 - 691 = 130
130 ÷ 691 = 0.18813314037626627
0.18813314037626627 x 100 = 18.81%