36.26% is the change from 455 to 620
Calculation steps:
[( 620 - 455 ) ÷ 455] x 100 = 36.26%
Formula
Percentage change = [(620 - 455) / 455] x 100
Subtract the new number by the original number
620 - 455 = 165
165 ÷ 455 = 0.3626373626373626
0.3626373626373626 x 100 = 36.26%