-18.81% is the change from 670 to 544
Calculation steps:
[( 544 - 670 ) ÷ 670] x 100 = -18.81%
Formula
Percentage change = [(544 - 670) / 670] x 100
Subtract the new number by the original number
544 - 670 = -126
-126 ÷ 670 = -0.1880597014925373
-0.1880597014925373 x 100 = -18.81%