36.97% is the change from 449 to 615
Calculation steps:
[( 615 - 449 ) ÷ 449] x 100 = 36.97%
Formula
Percentage change = [(615 - 449) / 449] x 100
Subtract the new number by the original number
615 - 449 = 166
166 ÷ 449 = 0.36971046770601335
0.36971046770601335 x 100 = 36.97%