89.09% is the change from 449 to 849
Calculation steps:
[( 849 - 449 ) ÷ 449] x 100 = 89.09%
Formula
Percentage change = [(849 - 449) / 449] x 100
Subtract the new number by the original number
849 - 449 = 400
400 ÷ 449 = 0.89086859688196
0.89086859688196 x 100 = 89.09%