-61.92% is the change from 814 to 310
Calculation steps:
[( 310 - 814 ) ÷ 814] x 100 = -61.92%
Formula
Percentage change = [(310 - 814) / 814] x 100
Subtract the new number by the original number
310 - 814 = -504
-504 ÷ 814 = -0.6191646191646192
-0.6191646191646192 x 100 = -61.92%