309.13% is the change from 208 to 851
Calculation steps:
[( 851 - 208 ) ÷ 208] x 100 = 309.13%
Formula
Percentage change = [(851 - 208) / 208] x 100
Subtract the new number by the original number
851 - 208 = 643
643 ÷ 208 = 3.0913461538461537
3.0913461538461537 x 100 = 309.13%