-39.7% is the change from 811 to 489
Calculation steps:
[( 489 - 811 ) ÷ 811] x 100 = -39.7%
Formula
Percentage change = [(489 - 811) / 811] x 100
Subtract the new number by the original number
489 - 811 = -322
-322 ÷ 811 = -0.3970406905055487
-0.3970406905055487 x 100 = -39.7%