294.09% is the change from 203 to 800
Calculation steps:
[( 800 - 203 ) ÷ 203] x 100 = 294.09%
Formula
Percentage change = [(800 - 203) / 203] x 100
Subtract the new number by the original number
800 - 203 = 597
597 ÷ 203 = 2.9408866995073892
2.9408866995073892 x 100 = 294.09%