155.78% is the change from 199 to 509
Calculation steps:
[( 509 - 199 ) ÷ 199] x 100 = 155.78%
Formula
Percentage change = [(509 - 199) / 199] x 100
Subtract the new number by the original number
509 - 199 = 310
310 ÷ 199 = 1.5577889447236182
1.5577889447236182 x 100 = 155.78%