42.2% is the change from 455 to 647
Calculation steps:
[( 647 - 455 ) ÷ 455] x 100 = 42.2%
Formula
Percentage change = [(647 - 455) / 455] x 100
Subtract the new number by the original number
647 - 455 = 192
192 ÷ 455 = 0.421978021978022
0.421978021978022 x 100 = 42.2%