155.5% is the change from 200 to 511
Calculation steps:
[( 511 - 200 ) ÷ 200] x 100 = 155.5%
Formula
Percentage change = [(511 - 200) / 200] x 100
Subtract the new number by the original number
511 - 200 = 311
311 ÷ 200 = 1.555
1.555 x 100 = 155.5%
Example