-65.17% is the change from 890 to 310
Calculation steps:
[( 310 - 890 ) ÷ 890] x 100 = -65.17%
Formula
Percentage change = [(310 - 890) / 890] x 100
Subtract the new number by the original number
310 - 890 = -580
-580 ÷ 890 = -0.651685393258427
-0.651685393258427 x 100 = -65.17%