200% is the change from 271 to 813
Calculation steps:
[( 813 - 271 ) ÷ 271] x 100 = 200%
Formula
Percentage change = [(813 - 271) / 271] x 100
Subtract the new number by the original number
813 - 271 = 542
542 ÷ 271 = 2
2 x 100 = 200%
Example