-39.1% is the change from 780 to 475
Calculation steps:
[( 475 - 780 ) ÷ 780] x 100 = -39.1%
Formula
Percentage change = [(475 - 780) / 780] x 100
Subtract the new number by the original number
475 - 780 = -305
-305 ÷ 780 = -0.391025641025641
-0.391025641025641 x 100 = -39.1%