-49.63% is the change from 810 to 408
Calculation steps:
[( 408 - 810 ) ÷ 810] x 100 = -49.63%
Formula
Percentage change = [(408 - 810) / 810] x 100
Subtract the new number by the original number
408 - 810 = -402
-402 ÷ 810 = -0.4962962962962963
-0.4962962962962963 x 100 = -49.63%