68.2% is the change from 456 to 767
Calculation steps:
[( 767 - 456 ) ÷ 456] x 100 = 68.2%
Formula
Percentage change = [(767 - 456) / 456] x 100
Subtract the new number by the original number
767 - 456 = 311
311 ÷ 456 = 0.6820175438596491
0.6820175438596491 x 100 = 68.2%