68.57% is the change from 455 to 767
Calculation steps:
[( 767 - 455 ) ÷ 455] x 100 = 68.57%
Formula
Percentage change = [(767 - 455) / 455] x 100
Subtract the new number by the original number
767 - 455 = 312
312 ÷ 455 = 0.6857142857142857
0.6857142857142857 x 100 = 68.57%