-62.02% is the change from 811 to 308
Calculation steps:
[( 308 - 811 ) ÷ 811] x 100 = -62.02%
Formula
Percentage change = [(308 - 811) / 811] x 100
Subtract the new number by the original number
308 - 811 = -503
-503 ÷ 811 = -0.6202219482120839
-0.6202219482120839 x 100 = -62.02%