145.89% is the change from 207 to 509
Calculation steps:
[( 509 - 207 ) ÷ 207] x 100 = 145.89%
Formula
Percentage change = [(509 - 207) / 207] x 100
Subtract the new number by the original number
509 - 207 = 302
302 ÷ 207 = 1.458937198067633
1.458937198067633 x 100 = 145.89%