46.05% is the change from 456 to 666
Calculation steps:
[( 666 - 456 ) ÷ 456] x 100 = 46.05%
Formula
Percentage change = [(666 - 456) / 456] x 100
Subtract the new number by the original number
666 - 456 = 210
210 ÷ 456 = 0.4605263157894737
0.4605263157894737 x 100 = 46.05%