198.83% is the change from 171 to 511
Calculation steps:
[( 511 - 171 ) ÷ 171] x 100 = 198.83%
Formula
Percentage change = [(511 - 171) / 171] x 100
Subtract the new number by the original number
511 - 171 = 340
340 ÷ 171 = 1.9883040935672514
1.9883040935672514 x 100 = 198.83%