-14.16% is the change from 770 to 661
Calculation steps:
[( 661 - 770 ) ÷ 770] x 100 = -14.16%
Formula
Percentage change = [(661 - 770) / 770] x 100
Subtract the new number by the original number
661 - 770 = -109
-109 ÷ 770 = -0.14155844155844155
-0.14155844155844155 x 100 = -14.16%