-28.81% is the change from 670 to 477
Calculation steps:
[( 477 - 670 ) ÷ 670] x 100 = -28.81%
Formula
Percentage change = [(477 - 670) / 670] x 100
Subtract the new number by the original number
477 - 670 = -193
-193 ÷ 670 = -0.2880597014925373
-0.2880597014925373 x 100 = -28.81%