45.43% is the change from 350 to 509
Calculation steps:
[( 509 - 350 ) ÷ 350] x 100 = 45.43%
Formula
Percentage change = [(509 - 350) / 350] x 100
Subtract the new number by the original number
509 - 350 = 159
159 ÷ 350 = 0.4542857142857143
0.4542857142857143 x 100 = 45.43%