18.68% is the change from 835 to 991
Calculation steps:
[( 991 - 835 ) ÷ 835] x 100 = 18.68%
Formula
Percentage change = [(991 - 835) / 835] x 100
Subtract the new number by the original number
991 - 835 = 156
156 ÷ 835 = 0.18682634730538922
0.18682634730538922 x 100 = 18.68%