312.62% is the change from 206 to 850
Calculation steps:
[( 850 - 206 ) ÷ 206] x 100 = 312.62%
Formula
Percentage change = [(850 - 206) / 206] x 100
Subtract the new number by the original number
850 - 206 = 644
644 ÷ 206 = 3.1262135922330097
3.1262135922330097 x 100 = 312.62%