77.36% is the change from 455 to 807
Calculation steps:
[( 807 - 455 ) ÷ 455] x 100 = 77.36%
Formula
Percentage change = [(807 - 455) / 455] x 100
Subtract the new number by the original number
807 - 455 = 352
352 ÷ 455 = 0.7736263736263737
0.7736263736263737 x 100 = 77.36%