19.69% is the change from 828 to 991
Calculation steps:
[( 991 - 828 ) ÷ 828] x 100 = 19.69%
Formula
Percentage change = [(991 - 828) / 828] x 100
Subtract the new number by the original number
991 - 828 = 163
163 ÷ 828 = 0.19685990338164253
0.19685990338164253 x 100 = 19.69%