486.9% is the change from 145 to 851
Calculation steps:
[( 851 - 145 ) ÷ 145] x 100 = 486.9%
Formula
Percentage change = [(851 - 145) / 145] x 100
Subtract the new number by the original number
851 - 145 = 706
706 ÷ 145 = 4.86896551724138
4.86896551724138 x 100 = 486.9%