9.12% is the change from 844 to 921
Calculation steps:
[( 921 - 844 ) ÷ 844] x 100 = 9.12%
Formula
Percentage change = [(921 - 844) / 844] x 100
Subtract the new number by the original number
921 - 844 = 77
77 ÷ 844 = 0.09123222748815166
0.09123222748815166 x 100 = 9.12%