307.54% is the change from 199 to 811
Calculation steps:
[( 811 - 199 ) ÷ 199] x 100 = 307.54%
Formula
Percentage change = [(811 - 199) / 199] x 100
Subtract the new number by the original number
811 - 199 = 612
612 ÷ 199 = 3.0753768844221105
3.0753768844221105 x 100 = 307.54%