314.63% is the change from 205 to 850
Calculation steps:
[( 850 - 205 ) ÷ 205] x 100 = 314.63%
Formula
Percentage change = [(850 - 205) / 205] x 100
Subtract the new number by the original number
850 - 205 = 645
645 ÷ 205 = 3.1463414634146343
3.1463414634146343 x 100 = 314.63%