200.37% is the change from 270 to 811
Calculation steps:
[( 811 - 270 ) ÷ 270] x 100 = 200.37%
Formula
Percentage change = [(811 - 270) / 270] x 100
Subtract the new number by the original number
811 - 270 = 541
541 ÷ 270 = 2.0037037037037035
2.0037037037037035 x 100 = 200.37%