9.21% is the change from 771 to 842
Calculation steps:
[( 842 - 771 ) ÷ 771] x 100 = 9.21%
Formula
Percentage change = [(842 - 771) / 771] x 100
Subtract the new number by the original number
842 - 771 = 71
71 ÷ 771 = 0.09208819714656291
0.09208819714656291 x 100 = 9.21%