87.94% is the change from 456 to 857
Calculation steps:
[( 857 - 456 ) ÷ 456] x 100 = 87.94%
Formula
Percentage change = [(857 - 456) / 456] x 100
Subtract the new number by the original number
857 - 456 = 401
401 ÷ 456 = 0.8793859649122807
0.8793859649122807 x 100 = 87.94%