311.9% is the change from 210 to 865
Calculation steps:
[( 865 - 210 ) ÷ 210] x 100 = 311.9%
Formula
Percentage change = [(865 - 210) / 210] x 100
Subtract the new number by the original number
865 - 210 = 655
655 ÷ 210 = 3.119047619047619
3.119047619047619 x 100 = 311.9%