44.74% is the change from 456 to 660
Calculation steps:
[( 660 - 456 ) ÷ 456] x 100 = 44.74%
Formula
Percentage change = [(660 - 456) / 456] x 100
Subtract the new number by the original number
660 - 456 = 204
204 ÷ 456 = 0.4473684210526316
0.4473684210526316 x 100 = 44.74%