-65.1% is the change from 891 to 311
Calculation steps:
[( 311 - 891 ) ÷ 891] x 100 = -65.1%
Formula
Percentage change = [(311 - 891) / 891] x 100
Subtract the new number by the original number
311 - 891 = -580
-580 ÷ 891 = -0.6509539842873177
-0.6509539842873177 x 100 = -65.1%