100% is the change from 457 to 914
Calculation steps:
[( 914 - 457 ) ÷ 457] x 100 = 100%
Formula
Percentage change = [(914 - 457) / 457] x 100
Subtract the new number by the original number
914 - 457 = 457
457 ÷ 457 = 1
1 x 100 = 100%
Example