-3.72% is the change from 807 to 777
Calculation steps:
[( 777 - 807 ) ÷ 807] x 100 = -3.72%
Formula
Percentage change = [(777 - 807) / 807] x 100
Subtract the new number by the original number
777 - 807 = -30
-30 ÷ 807 = -0.03717472118959108
-0.03717472118959108 x 100 = -3.72%