84.9% is the change from 457 to 845
Calculation steps:
[( 845 - 457 ) ÷ 457] x 100 = 84.9%
Formula
Percentage change = [(845 - 457) / 457] x 100
Subtract the new number by the original number
845 - 457 = 388
388 ÷ 457 = 0.849015317286652
0.849015317286652 x 100 = 84.9%