-52.16% is the change from 811 to 388
Calculation steps:
[( 388 - 811 ) ÷ 811] x 100 = -52.16%
Formula
Percentage change = [(388 - 811) / 811] x 100
Subtract the new number by the original number
388 - 811 = -423
-423 ÷ 811 = -0.5215782983970407
-0.5215782983970407 x 100 = -52.16%