-71.79% is the change from 670 to 189
Calculation steps:
[( 189 - 670 ) ÷ 670] x 100 = -71.79%
Formula
Percentage change = [(189 - 670) / 670] x 100
Subtract the new number by the original number
189 - 670 = -481
-481 ÷ 670 = -0.7179104477611941
-0.7179104477611941 x 100 = -71.79%