7.8% is the change from 820 to 884
Calculation steps:
[( 884 - 820 ) ÷ 820] x 100 = 7.8%
Formula
Percentage change = [(884 - 820) / 820] x 100
Subtract the new number by the original number
884 - 820 = 64
64 ÷ 820 = 0.07804878048780488
0.07804878048780488 x 100 = 7.8%