486.21% is the change from 145 to 850
Calculation steps:
[( 850 - 145 ) ÷ 145] x 100 = 486.21%
Formula
Percentage change = [(850 - 145) / 145] x 100
Subtract the new number by the original number
850 - 145 = 705
705 ÷ 145 = 4.862068965517241
4.862068965517241 x 100 = 486.21%