70.95% is the change from 451 to 771
Calculation steps:
[( 771 - 451 ) ÷ 451] x 100 = 70.95%
Formula
Percentage change = [(771 - 451) / 451] x 100
Subtract the new number by the original number
771 - 451 = 320
320 ÷ 451 = 0.7095343680709535
0.7095343680709535 x 100 = 70.95%