50.22% is the change from 446 to 670
Calculation steps:
[( 670 - 446 ) ÷ 446] x 100 = 50.22%
Formula
Percentage change = [(670 - 446) / 446] x 100
Subtract the new number by the original number
670 - 446 = 224
224 ÷ 446 = 0.5022421524663677
0.5022421524663677 x 100 = 50.22%