-61.3% is the change from 801 to 310
Calculation steps:
[( 310 - 801 ) ÷ 801] x 100 = -61.3%
Formula
Percentage change = [(310 - 801) / 801] x 100
Subtract the new number by the original number
310 - 801 = -491
-491 ÷ 801 = -0.6129837702871411
-0.6129837702871411 x 100 = -61.3%