7.07% is the change from 509 to 545
Calculation steps:
[( 545 - 509 ) ÷ 509] x 100 = 7.07%
Formula
Percentage change = [(545 - 509) / 509] x 100
Subtract the new number by the original number
545 - 509 = 36
36 ÷ 509 = 0.07072691552062868
0.07072691552062868 x 100 = 7.07%