313.4% is the change from 209 to 864
Calculation steps:
[( 864 - 209 ) ÷ 209] x 100 = 313.4%
Formula
Percentage change = [(864 - 209) / 209] x 100
Subtract the new number by the original number
864 - 209 = 655
655 ÷ 209 = 3.1339712918660285
3.1339712918660285 x 100 = 313.4%