17.55% is the change from 661 to 777
Calculation steps:
[( 777 - 661 ) ÷ 661] x 100 = 17.55%
Formula
Percentage change = [(777 - 661) / 661] x 100
Subtract the new number by the original number
777 - 661 = 116
116 ÷ 661 = 0.17549167927382753
0.17549167927382753 x 100 = 17.55%