-62.16% is the change from 814 to 308
Calculation steps:
[( 308 - 814 ) ÷ 814] x 100 = -62.16%
Formula
Percentage change = [(308 - 814) / 814] x 100
Subtract the new number by the original number
308 - 814 = -506
-506 ÷ 814 = -0.6216216216216216
-0.6216216216216216 x 100 = -62.16%