-28.21% is the change from 670 to 481
Calculation steps:
[( 481 - 670 ) ÷ 670] x 100 = -28.21%
Formula
Percentage change = [(481 - 670) / 670] x 100
Subtract the new number by the original number
481 - 670 = -189
-189 ÷ 670 = -0.282089552238806
-0.282089552238806 x 100 = -28.21%