-47.84% is the change from 811 to 423
Calculation steps:
[( 423 - 811 ) ÷ 811] x 100 = -47.84%
Formula
Percentage change = [(423 - 811) / 811] x 100
Subtract the new number by the original number
423 - 811 = -388
-388 ÷ 811 = -0.4784217016029593
-0.4784217016029593 x 100 = -47.84%