19.83% is the change from 827 to 991
Calculation steps:
[( 991 - 827 ) ÷ 827] x 100 = 19.83%
Formula
Percentage change = [(991 - 827) / 827] x 100
Subtract the new number by the original number
991 - 827 = 164
164 ÷ 827 = 0.19830713422007254
0.19830713422007254 x 100 = 19.83%