-19.82% is the change from 777 to 623
Calculation steps:
[( 623 - 777 ) ÷ 777] x 100 = -19.82%
Formula
Percentage change = [(623 - 777) / 777] x 100
Subtract the new number by the original number
623 - 777 = -154
-154 ÷ 777 = -0.1981981981981982
-0.1981981981981982 x 100 = -19.82%