69.08% is the change from 456 to 771
Calculation steps:
[( 771 - 456 ) ÷ 456] x 100 = 69.08%
Formula
Percentage change = [(771 - 456) / 456] x 100
Subtract the new number by the original number
771 - 456 = 315
315 ÷ 456 = 0.6907894736842105
0.6907894736842105 x 100 = 69.08%