67.91% is the change from 455 to 764
Calculation steps:
[( 764 - 455 ) ÷ 455] x 100 = 67.91%
Formula
Percentage change = [(764 - 455) / 455] x 100
Subtract the new number by the original number
764 - 455 = 309
309 ÷ 455 = 0.6791208791208792
0.6791208791208792 x 100 = 67.91%