12.55% is the change from 821 to 924
Calculation steps:
[( 924 - 821 ) ÷ 821] x 100 = 12.55%
Formula
Percentage change = [(924 - 821) / 821] x 100
Subtract the new number by the original number
924 - 821 = 103
103 ÷ 821 = 0.12545676004872108
0.12545676004872108 x 100 = 12.55%