-62.27% is the change from 811 to 306
Calculation steps:
[( 306 - 811 ) ÷ 811] x 100 = -62.27%
Formula
Percentage change = [(306 - 811) / 811] x 100
Subtract the new number by the original number
306 - 811 = -505
-505 ÷ 811 = -0.6226880394574599
-0.6226880394574599 x 100 = -62.27%