-49.57% is the change from 811 to 409
Calculation steps:
[( 409 - 811 ) ÷ 811] x 100 = -49.57%
Formula
Percentage change = [(409 - 811) / 811] x 100
Subtract the new number by the original number
409 - 811 = -402
-402 ÷ 811 = -0.4956843403205919
-0.4956843403205919 x 100 = -49.57%