64.84% is the change from 455 to 750
Calculation steps:
[( 750 - 455 ) ÷ 455] x 100 = 64.84%
Formula
Percentage change = [(750 - 455) / 455] x 100
Subtract the new number by the original number
750 - 455 = 295
295 ÷ 455 = 0.6483516483516484
0.6483516483516484 x 100 = 64.84%