-2.63% is the change from 798 to 777
Calculation steps:
[( 777 - 798 ) ÷ 798] x 100 = -2.63%
Formula
Percentage change = [(777 - 798) / 798] x 100
Subtract the new number by the original number
777 - 798 = -21
-21 ÷ 798 = -0.02631578947368421
-0.02631578947368421 x 100 = -2.63%