50.74% is the change from 203 to 306
Calculation steps:
[( 306 - 203 ) ÷ 203] x 100 = 50.74%
Formula
Percentage change = [(306 - 203) / 203] x 100
Subtract the new number by the original number
306 - 203 = 103
103 ÷ 203 = 0.5073891625615764
0.5073891625615764 x 100 = 50.74%