55.5% is the change from 200 to 311
Calculation steps:
[( 311 - 200 ) ÷ 200] x 100 = 55.5%
Formula
Percentage change = [(311 - 200) / 200] x 100
Subtract the new number by the original number
311 - 200 = 111
111 ÷ 200 = 0.555
0.555 x 100 = 55.5%
Example