49.66% is the change from 445 to 666
Calculation steps:
[( 666 - 445 ) ÷ 445] x 100 = 49.66%
Formula
Percentage change = [(666 - 445) / 445] x 100
Subtract the new number by the original number
666 - 445 = 221
221 ÷ 445 = 0.4966292134831461
0.4966292134831461 x 100 = 49.66%