87.53% is the change from 457 to 857
Calculation steps:
[( 857 - 457 ) ÷ 457] x 100 = 87.53%
Formula
Percentage change = [(857 - 457) / 457] x 100
Subtract the new number by the original number
857 - 457 = 400
400 ÷ 457 = 0.87527352297593
0.87527352297593 x 100 = 87.53%