20.98% is the change from 820 to 992
Calculation steps:
[( 992 - 820 ) ÷ 820] x 100 = 20.98%
Formula
Percentage change = [(992 - 820) / 820] x 100
Subtract the new number by the original number
992 - 820 = 172
172 ÷ 820 = 0.2097560975609756
0.2097560975609756 x 100 = 20.98%