301.5% is the change from 200 to 803
Calculation steps:
[( 803 - 200 ) ÷ 200] x 100 = 301.5%
Formula
Percentage change = [(803 - 200) / 200] x 100
Subtract the new number by the original number
803 - 200 = 603
603 ÷ 200 = 3.015
3.015 x 100 = 301.5%
Example