161.61% is the change from 310 to 811
Calculation steps:
[( 811 - 310 ) ÷ 310] x 100 = 161.61%
Formula
Percentage change = [(811 - 310) / 310] x 100
Subtract the new number by the original number
811 - 310 = 501
501 ÷ 310 = 1.6161290322580646
1.6161290322580646 x 100 = 161.61%