71.4% is the change from 451 to 773
Calculation steps:
[( 773 - 451 ) ÷ 451] x 100 = 71.4%
Formula
Percentage change = [(773 - 451) / 451] x 100
Subtract the new number by the original number
773 - 451 = 322
322 ÷ 451 = 0.7139689578713969
0.7139689578713969 x 100 = 71.4%