91.29% is the change from 448 to 857
Calculation steps:
[( 857 - 448 ) ÷ 448] x 100 = 91.29%
Formula
Percentage change = [(857 - 448) / 448] x 100
Subtract the new number by the original number
857 - 448 = 409
409 ÷ 448 = 0.9129464285714286
0.9129464285714286 x 100 = 91.29%