-43.83% is the change from 810 to 455
Calculation steps:
[( 455 - 810 ) ÷ 810] x 100 = -43.83%
Formula
Percentage change = [(455 - 810) / 810] x 100
Subtract the new number by the original number
455 - 810 = -355
-355 ÷ 810 = -0.4382716049382716
-0.4382716049382716 x 100 = -43.83%