-78.51% is the change from 670 to 144
Calculation steps:
[( 144 - 670 ) ÷ 670] x 100 = -78.51%
Formula
Percentage change = [(144 - 670) / 670] x 100
Subtract the new number by the original number
144 - 670 = -526
-526 ÷ 670 = -0.7850746268656716
-0.7850746268656716 x 100 = -78.51%