12.09% is the change from 455 to 510
Calculation steps:
[( 510 - 455 ) ÷ 455] x 100 = 12.09%
Formula
Percentage change = [(510 - 455) / 455] x 100
Subtract the new number by the original number
510 - 455 = 55
55 ÷ 455 = 0.12087912087912088
0.12087912087912088 x 100 = 12.09%