-4.66% is the change from 815 to 777
Calculation steps:
[( 777 - 815 ) ÷ 815] x 100 = -4.66%
Formula
Percentage change = [(777 - 815) / 815] x 100
Subtract the new number by the original number
777 - 815 = -38
-38 ÷ 815 = -0.046625766871165646
-0.046625766871165646 x 100 = -4.66%