12.87% is the change from 777 to 877
Calculation steps:
[( 877 - 777 ) ÷ 777] x 100 = 12.87%
Formula
Percentage change = [(877 - 777) / 777] x 100
Subtract the new number by the original number
877 - 777 = 100
100 ÷ 777 = 0.1287001287001287
0.1287001287001287 x 100 = 12.87%