133.49% is the change from 218 to 509
Calculation steps:
[( 509 - 218 ) ÷ 218] x 100 = 133.49%
Formula
Percentage change = [(509 - 218) / 218] x 100
Subtract the new number by the original number
509 - 218 = 291
291 ÷ 218 = 1.334862385321101
1.334862385321101 x 100 = 133.49%