-51.42% is the change from 811 to 394
Calculation steps:
[( 394 - 811 ) ÷ 811] x 100 = -51.42%
Formula
Percentage change = [(394 - 811) / 811] x 100
Subtract the new number by the original number
394 - 811 = -417
-417 ÷ 811 = -0.5141800246609125
-0.5141800246609125 x 100 = -51.42%