37.86% is the change from 449 to 619
Calculation steps:
[( 619 - 449 ) ÷ 449] x 100 = 37.86%
Formula
Percentage change = [(619 - 449) / 449] x 100
Subtract the new number by the original number
619 - 449 = 170
170 ÷ 449 = 0.37861915367483295
0.37861915367483295 x 100 = 37.86%