-34.93% is the change from 773 to 503
Calculation steps:
[( 503 - 773 ) ÷ 773] x 100 = -34.93%
Formula
Percentage change = [(503 - 773) / 773] x 100
Subtract the new number by the original number
503 - 773 = -270
-270 ÷ 773 = -0.34928848641655885
-0.34928848641655885 x 100 = -34.93%