-49.38% is the change from 810 to 410
Calculation steps:
[( 410 - 810 ) ÷ 810] x 100 = -49.38%
Formula
Percentage change = [(410 - 810) / 810] x 100
Subtract the new number by the original number
410 - 810 = -400
-400 ÷ 810 = -0.49382716049382713
-0.49382716049382713 x 100 = -49.38%