12.97% is the change from 771 to 871
Calculation steps:
[( 871 - 771 ) ÷ 771] x 100 = 12.97%
Formula
Percentage change = [(871 - 771) / 771] x 100
Subtract the new number by the original number
871 - 771 = 100
100 ÷ 771 = 0.1297016861219196
0.1297016861219196 x 100 = 12.97%