-61.82% is the change from 812 to 310
Calculation steps:
[( 310 - 812 ) ÷ 812] x 100 = -61.82%
Formula
Percentage change = [(310 - 812) / 812] x 100
Subtract the new number by the original number
310 - 812 = -502
-502 ÷ 812 = -0.6182266009852216
-0.6182266009852216 x 100 = -61.82%